CN104235591B - Impact-resistant hybrid grid structure and compression method thereof - Google Patents
Impact-resistant hybrid grid structure and compression method thereof Download PDFInfo
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- CN104235591B CN104235591B CN201410403295.7A CN201410403295A CN104235591B CN 104235591 B CN104235591 B CN 104235591B CN 201410403295 A CN201410403295 A CN 201410403295A CN 104235591 B CN104235591 B CN 104235591B
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Abstract
The invention discloses an impact-resistant hybrid grid structure, which comprises an upper-layer structure, odd layers of middle-layer structures and a first lower-layer structure which are connected in sequence in a stack-up manner, or the impact-resistant hybrid grid structure comprises the upper-layer structure, even layers of middle-layer structures and a second lower-layer structure which are connected in sequence in a stack-up manner; the invention also discloses a compression method for compressing the impact-resistant hybrid grid structure. The compression method comprises the following steps that (S1) pressure is applied to a first transverse stretching edge, a second transverse stretching edge and a third transverse stretching edge; (S2) the impact-resistant hybrid grid structure correspondingly deforms, and during the process of deformation, the stress-strain curve of the impact-resistant hybrid grid structure is turned into a horizontal straight line; (S3) pressure application is continued on the impact-resistant hybrid grid structure to enable the stress-strain curve of the impact-resistant hybrid grid structure to start climbing; (S4) after the impact-resistant hybrid grid structure is fully compacted and bruised, energy absorption depends on mutual friction and slippage between the edges. The impact-resistant hybrid grid structure has the advantages that production is easy, the cost is low, and the like.
Description
Technical field
The present invention relates to a kind of shock proof grid, particularly to a kind of shock proof hybrid grid structure and its pressure
Compression method.
Background technology
Traditional regular hexagon honeycomb grid structural material belongs to porous material, have light weight, specific strength height, sound-absorbing, every
The advantages of sound, shock resistance, therefore it is widely used in the fields such as packaging, load-bearing, shock resistance.For the porous material such as common honeycomb
Material, its stress-strain diagram presents three phase characteristics, respectively elastic deformation area, plasticity platform area and dense area.When many
When Porous materials stress-strain diagram reaches dense area, show that material is compacted completely, lose the function of buffer shock-absorbing.Therefore cause
Elastic deformation area before Mi Qu and plasticity platform area curve reflect the energy of porous material with the encirclement area straining coordinate
Absorbent properties.The EAC of porous material is also relevant with stress-strain diagram course, by changing the structure ginseng of material
Number can change its stress strain curve, reaches the purpose controlling its energy absorption.Conventional regular hexagon honeycomb etc.
Porous material is after entering plasticity platform area until packing stage almost can keep constant stress value.
Content of the invention
The primary and foremost purpose of the present invention is to overcome the shortcoming of prior art and deficiency, provides a kind of shock proof hybrid grid
Structure, this network is passed through to change the internal structure of honeycomb, improves the stress-strain diagram of its platform phase latter half, from
And improve the shock resistance of network.
Another object of the present invention is to overcoming shortcoming and the deficiency of prior art, provide a kind of compression shock proof mixing
The compression method of network.
The primary and foremost purpose of the present invention is achieved through the following technical solutions: a kind of shock proof hybrid grid structure, successively by
Superstructure 101, odd-level media layer damage 201 and the first understructure 301 or superstructure 101, even level media layer damage 202
Connect composition with the second understructure 302 order stacking；Described superstructure 101 includes the first oblique honeycomb side being sequentially connected
11st, the second oblique honeycomb is 14 and first while in 12, the first horizontal auxetic, the 21, the 3rd oblique honeycomb is in 13, four oblique honeycomb
Laterally honeycomb side 31；First horizontal auxetic while 21 with the first horizontal honeycomb while 31 be parallel to each other；First oblique honeycomb side 11 and
Two oblique honeycombs are 13 equal with the angle between the 4th oblique honeycomb side 14 in the angle between 12 and three oblique honeycombs, and
Two oblique honeycombs when 12 and the first horizontal auxetic 21 between angle and the first horizontal auxetic when 21 and three oblique honeycombs
Angle between 13 is equal；First oblique honeycomb when 11 and four oblique honeycombs 14 with regard in the first horizontal auxetic side 21 hang down
Bobbin is symmetrical, the second oblique honeycomb when 12 and three oblique honeycombs 13 with regard to the first horizontal auxetic side 21 perpendicular bisector axle pair
Claim；Described odd-level media layer damage 201 includes the monolayer media layer damage 2 that odd number stacks gradually, and even level media layer damage 202 wraps
Include the monolayer media layer damage 2 that even number stacks gradually；The 5th oblique honeycomb side 15 that monolayer media layer damage 2 includes being sequentially connected,
Second horizontal honeycomb is in 32, six oblique honeycomb 16 and the 3rd horizontal honeycomb side 33；Second horizontal honeycomb side 32 and the 3rd is horizontal
It is parallel to each other to honeycomb side 33；5th oblique honeycomb when 15 and the second horizontal honeycomb 32 between angle and the second horizontal honeycomb
While 32 with six oblique honeycombs while 16 between angle equal；5th oblique honeycomb is when 15 and six oblique honeycombs 16 with regard to
The perpendicular bisector axial symmetry on two horizontal honeycomb sides 32；Horizontal by sharing second between monolayer media layer damage 2 and monolayer media layer damage 2
Honeycomb 33 carries out interlayer connection when 32 or three horizontal honeycombs, and n-th layer monolayer media layer damage 2 and (n-1)th layer of monolayer middle level
Structure 2 is with regard to its horizontal honeycomb of common edge second 33 axial symmetry when 32 or three horizontal honeycombs；Described first understructure 301
Including the 7th oblique honeycomb being sequentially connected in 17, eight oblique honeycomb the 18, the 4th horizontal honeycomb side 34, the 9th oblique honeycomb
In 19, ten oblique honeycomb 10 and the second horizontal auxetic side 22；4th horizontal honeycomb while 34 with the second horizontal auxetic while 22 phases
Mutually parallel；7th oblique honeycomb when 17 and eight oblique honeycombs 18 between angle and the 9th oblique honeycomb side 19 oblique with the tenth
Equal to the angle between honeycomb side 10, the 8th oblique honeycomb when 18 and four horizontal honeycombs 34 between angle and the 4th horizontal
To honeycomb while 34 with nine oblique honeycombs while 19 between angle equal；7th oblique honeycomb is when 17 and ten oblique honeycombs 10
With regard to the perpendicular bisector axial symmetry on the 4th horizontal honeycomb side 34, the 8th oblique honeycomb is when 18 and nine oblique honeycombs 19 with regard to the 4th
The laterally perpendicular bisector axial symmetry on honeycomb side 34；Described second understructure 302 includes the 11st oblique honeycomb side being sequentially connected
111st, the 12nd oblique honeycomb is while in 112, three horizontal auxetic, the 23, the 13rd oblique honeycomb is in 113,14 oblique honeycomb
114 and the 5th horizontal honeycomb side 35；3rd horizontal auxetic while 23 with five horizontal honeycombs while 35 be parallel to each other；11st oblique honeybee
Nest when 111 and 12 oblique honeycomb 112 between angle and the 13rd oblique honeycomb in 113 and 14 oblique honeycomb while
Angle between 114 is equal, the 12nd oblique honeycomb when 112 and three horizontal auxetic 23 between angle and the 3rd laterally draw
Swollen while 23 with 13 oblique honeycomb while 113 between angle equal；11st oblique honeycomb side 111 and the 14th oblique honeycomb
While 114 with regard to three horizontal auxetic while 23 perpendicular bisector axial symmetry, the 12nd oblique honeycomb is when 112 and 13 oblique honeycomb
113 with regard to the 3rd horizontal auxetic side 23 perpendicular bisector axial symmetry；Described first oblique honeycomb in 11, the second oblique honeycomb 12,
3rd oblique honeycomb is the 16, the 7th oblique while in 13, four oblique honeycomb, the 14, the 5th oblique honeycomb is in 15, six oblique honeycomb
Honeycomb the 10, the 11st oblique honeycomb side while the 18, the 9th oblique honeycomb is in 19, ten oblique honeycomb in 17, eight oblique honeycomb
111st, the equal length on the 12nd oblique honeycomb the 113 and the 14th oblique honeycomb side 114 in 112,13 oblique honeycomb, the
One horizontal auxetic in 21, the second horizontal auxetic 22 and the 3rd horizontal auxetic side 23 equal length, the first horizontal honeycomb side 31,
Second horizontal honeycomb while in 32, three horizontal honeycomb, the 33, the 4th horizontal honeycomb is in 34 and five horizontal honeycombs 35 length phase
Deng；Described superstructure 101 and odd-level media layer damage 201 pass through the first horizontal honeycomb while 31 with three horizontal honeycombs while 33 enter
Row interlayer connects, and odd-level media layer damage 201 and the first understructure 301 pass through the second horizontal honeycomb side 32 and the 4th horizontal honeybee
Nest side 34 carries out interlayer connection, and it is horizontal that superstructure 101 and even level media layer damage 202 pass through the first horizontal honeycomb side 31 and the 3rd
Carry out interlayer connection to honeycomb side 33, even level media layer damage 202 and the second understructure 302 pass through the 3rd horizontal honeycomb side 33
It is attached with the 5th horizontal honeycomb side 35.
Described first oblique honeycomb while 11 length, the first horizontal honeycomb while 31 length and the first horizontal auxetic side 21 length
Degree ratio is 1:1:2；First horizontal auxetic when 21 and the second oblique honeycomb 12 between angle, the tenth oblique honeycomb side 10 with
Second horizontal auxetic, 112 and the 3rd angles between horizontal auxetic side 23 in the angle between 22 and 12 oblique honeycomb are
60 °, the first oblique honeycomb when 11 and the second oblique honeycomb 12 between angle, the first horizontal honeycomb side 31 and the 4th oblique honeybee
Nest is in the angle between 14, the second horizontal honeycomb 32 and when the 5th angle between 15 for the oblique honeycomb, seven oblique honeycombs
17 and the 8th oblique honeycomb in the angle between 18, eight oblique honeycombs 18 and the 4th angles between horizontal honeycomb side 34,
11st oblique honeycomb when 111 and 12 oblique honeycomb 112 between angle and the 14th oblique honeycomb side 114 and the 5th
Laterally the angle between honeycomb side 35 is 120 °.
By sharing the first horizontal auxetic in 21, the second horizontal auxetic 22 and the 3rd horizontal auxetic side 23 and
The horizontal auxetic of grid first is in 31 free end points and the first oblique honeycomb 11 of another grid and five oblique honeycombs 15
Intersection point, the 3rd horizontal honeycomb in 33 free end points five oblique honeycomb corresponding with another grid 15 end points,
Two horizontal auxetic 17 free end points and the 5th horizontal honeybee in seven oblique honeycomb of 22 free end points and another grid
Nest in 11 oblique honeycomb of 35 free end points and another grid 111 and the 5th oblique honeycomb side 15 intersection point successively
Connect, repeated arrangement.
The material preparing described network is aluminium sheet, plank, cardboard or macromolecular material；Prepare described network
Method is roll forming method and method of laser welding, board pasted method, the method manufacture such as ultraviolet light polymerization method, rapid shaping.
Described speed forming method be stereolithography apparatus method, selective laser sintering process, layer separated growth method and
Fused deposition modeling method.
Another object of the present invention is achieved through the following technical solutions: a kind of described shock proof hybrid grid knot of compression
The compression method of structure, comprises the following steps:
Step 1, to the first horizontal auxetic in 21, the second horizontal auxetic 22 and the 3rd horizontal auxetic side 23 apply pressure；
Step 2, the first oblique honeycomb the 12, the 3rd oblique honeycomb side 13, the 4th oblique honeycomb in 11, the second oblique honeycomb
In 14, seven oblique honeycomb the 17, the 8th oblique honeycomb in 18, nine oblique honeycomb 19 and the tenth oblique honeycomb side 10,
11 oblique honeycombs are while in 111,12 oblique honeycomb, the 112, the 13rd oblique honeycomb is in 113 and 14 oblique honeycomb
114 bending fold deformation；First oblique honeycomb when 11 and the second oblique honeycomb 12 between angle, the second oblique honeycomb side 12
And the first horizontal auxetic in the angle between 21, three oblique honeycombs 13 and the 4th angles between oblique honeycomb side 14,
Seven oblique honeycombs when 17 and eight oblique honeycombs 18 between angle, the 9th oblique honeycomb in 19 and ten oblique honeycombs while 10
Between angle, the tenth oblique honeycomb when 10 and the second horizontal auxetic 22 between angle, the 11st oblique honeycomb side 111 with
12nd oblique honeycomb, 112 and the 3rd folder between horizontal auxetic side 23 in the angle between 112,12 oblique honeycomb
Angle, the 3rd horizontal auxetic when 23 and 13 oblique honeycomb 113 between angle and the 13rd oblique honeycomb side 113 and
Angle between 14 oblique honeycomb sides 114 all reduces, the 4th oblique honeycomb when 14 and the first horizontal honeycomb 31 between folder
Angle, the 8th oblique honeycomb when 18 and four horizontal honeycombs 34 between angle, the 4th horizontal honeycomb side 34 and the 9th oblique honeybee
Nest 114 and the 5th angles between horizontal honeycomb side 35 in the angle between 19 and 14 oblique honeycomb all increase, and
One oblique honeycomb when 11 and the second oblique honeycomb 12 between, the 3rd oblique honeycomb in 13 and four oblique honeycombs while 14 between,
7th oblique honeycomb when 17 and eight oblique honeycombs 18 between, the 9th oblique honeycomb in 19 and ten oblique honeycombs while 10 it
Between, the 11st oblique honeycomb when 111 and 12 oblique honeycomb 112 between and the 13rd oblique honeycomb side 113 and the 14th
All fold between oblique honeycomb side 114 and make contact to flat, make the first horizontal auxetic in 21, the second horizontal auxetic 22 and the 3rd
Laterally auxetic while 23 with five oblique honeycomb in adjacent monolayer media layer damage 2 while the 15, second horizontal honeycomb side 32 and the 6th
Form a quadrilateral structure, the 5th oblique honeycomb is the 33, the 6th oblique in 15, three horizontal honeycomb between oblique honeycomb side 16
Honeycomb when 16 and three horizontal honeycombs 33 between relative position and angle keep constant；After folding first oblique honeycomb side
11st, the second oblique honeycomb is the 17, the 8th oblique while in 12, three oblique honeycomb, the 13, the 4th oblique honeycomb is in 14, seven oblique honeycomb
To honeycomb in 18, nine oblique honeycomb, the 19, the tenth oblique honeycomb is in 10,11 oblique honeycomb while the 111, the 12nd oblique honeybee
Nest is comprised in the tetragon re-forming on the 113 and the 14th oblique honeycomb side 114 in 112,13 oblique honeycomb；This
The stress-strain diagram of process becomes the straight line of a level；
Step 3, pressure is continued to described shock proof hybrid grid structure, the first oblique honeycomb side 11 is oblique with second
To honeycomb while between 12, three oblique honeycombs while 13 and the 4th oblique honeycomb between 14, seven oblique honeycombs while 17 and the 8th
Oblique honeycomb while between 18, nine oblique honeycombs while 19 and the tenth oblique honeycomb between 10,11 oblique honeycomb while 111 with
12nd oblique honeycomb is being pressed between the 113 and the 14th oblique honeycomb side 114 between 112 and during 13 oblique honeycomb completely
Real, described 5th oblique honeycomb 16 starts to produce flexural deformation when 15 and six oblique honeycombs, makes the tetragon re-forming
And the original regular hexagon of structure starts to occur bending and deformation；Now, described shock proof hybrid grid structure is regarded as one
Kind relatively low with respect to the porosity of not deformed front material porous material, therefore, described shock proof hybrid grid structure should
Stress-strain curve starts to climb；
After step 4, described shock proof hybrid grid structure are compacted conquassation completely, the absorption of energy rely on while with while it
Between phase mutual friction and sliding.
The present invention has such advantages as with respect to prior art and effect:
(1) present invention proposes a kind of shock proof hybrid grid structure, by changing the internal structure of honeycomb, changes it
The stress-strain diagram of platform phase latter half, thus improve the energy absorption capability of material.
(2) present invention strengthens the shock resistance of honeycomb texture on the premise of not improving honeycomb weight, and structure is simple,
Therefore can be produced on a large scale by conventional honeycomb core, manufacturing method, be had easy to manufacture, manufacturing cost is low excellent
Point.
Brief description
Fig. 1 is shock proof hybrid grid structure chart during odd-level media layer damage.
Fig. 2 is shock proof hybrid grid structure chart during even level media layer damage.
Fig. 3 connected by multiple shock proof hybrid grid during only one of which monolayer media layer damage 2 after structure chart.
Fig. 4 is the manufacture process schematic diagram of superstructure 101, the first understructure 301 and the second understructure 302.
Fig. 5 is the manufacture process schematic diagram of monolayer media layer damage 2.
Fig. 6 a is to stack sequential schematic when 1 for the total number of plies of media layer damage 2.
Fig. 6 b is to stack sequential schematic when 2 for the total number of plies of media layer damage 2.
Fig. 6 c is to stack sequential schematic when 3 for the total number of plies of media layer damage 2.
Fig. 7 is total number of plies of media layer damage 2 is deformation pattern after the compressed load of hybrid grid structure when 2.
Fig. 8 is that when this shock resistance hybrid grid structure is hit with traditional regular hexagon honeycomb texture, stress strain simulation is bent
Line comparison diagram.
Fig. 9 is this shock resistance hybrid grid structure and traditional positive six sides during total number of plies respectively 1,2 and 3 of media layer damage 2
The plastic dissipated energy when being hit for shape honeycomb texture simulation curve change comparison diagram in time.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention do not limit
In this.
Embodiment
As depicted in figs. 1 and 2, a kind of shock proof hybrid grid structure, successively by superstructure 101, odd-level middle level
Structure 201 and the first understructure 301 or superstructure 101, even level media layer damage 202 and the second understructure 302 order
Stacking connects composition；Described superstructure 101 include the first oblique honeycomb of being sequentially connected in 11, the second oblique honeycomb 12,
First horizontal auxetic is 31 while in 21, three oblique honeycomb, the 13, the 4th oblique honeycomb is in 14 and the first horizontal honeycomb；First is horizontal
Auxetic while 21 with the first horizontal honeycomb while 31 be parallel to each other；First oblique honeycomb when 11 and the second oblique honeycomb 12 between folder
Angle and the 3rd oblique honeycomb while 13 with four oblique honeycombs while 14 between angle equal, the second oblique honeycomb side 12 and first is horizontal
To auxetic, in the angle between 21 and the first horizontal auxetic, the angle between 21 with the 3rd oblique honeycomb side 13 is equal；First is oblique
To honeycomb when 11 and four oblique honeycombs 14 with regard to the first horizontal auxetic side 21 perpendicular bisector axial symmetry, the second oblique honeycomb side
12 and the 3rd oblique honeycomb while 13 with regard to the first horizontal auxetic while 21 perpendicular bisector axial symmetry；Described odd-level media layer damage 201
The monolayer media layer damage 2 stacking gradually including odd number, even level media layer damage 202 is included in the monolayer that even number stacks gradually
Rotating fields 2；It is the 32, the 6th oblique in 15, the second horizontal honeycomb that monolayer media layer damage 2 includes the 5th oblique honeycomb that is sequentially connected
Honeycomb is when 16 and three horizontal honeycombs 33；Second horizontal honeycomb while 32 with three horizontal honeycombs while 33 be parallel to each other；5th is oblique
To honeycomb when 15 and the second horizontal honeycomb 32 between angle and the second horizontal honeycomb when 32 and six oblique honeycombs 16 it
Between angle equal；5th oblique honeycomb when 15 and six oblique honeycombs 16 with regard to the second horizontal honeycomb side 32 perpendicular bisector axle
Symmetrically；By sharing the second horizontal honeycomb when 32 or three horizontal honeycombs between monolayer media layer damage 2 and monolayer media layer damage 2
33 carry out interlayer connection, and n-th layer monolayer media layer damage 2 is horizontal with regard to its common edge second with (n-1)th layer of monolayer media layer damage 2
Honeycomb 33 axial symmetry when 32 or three horizontal honeycombs；Described first understructure 301 includes the 7th oblique honeybee being sequentially connected
Nest the 19, the tenth oblique honeycomb side 10 and while the 18, the 4th horizontal honeycomb is in 34, nine oblique honeycomb in 17, eight oblique honeycomb
Second horizontal auxetic side 22；4th horizontal honeycomb while 34 with the second horizontal auxetic while 22 be parallel to each other；7th oblique honeycomb side 17
With the 8th oblique honeycomb in the angle between 18 and nine oblique honeycombs 19 and the tenth angle phase between oblique honeycomb side 10
In, the 8th oblique honeycomb when 18 and four horizontal honeycombs 34 between angle and the 4th horizontal honeycomb side 34 and the 9th oblique honeybee
Angle between nest side 19 is equal；7th oblique honeycomb is when 17 and ten oblique honeycombs 10 with regard to the 4th horizontal honeycomb side 34
Perpendicular bisector axial symmetry, the 8th oblique honeycomb when 18 and nine oblique honeycombs 19 with regard to the 4th horizontal honeycomb side 34 perpendicular bisector axle
Symmetrically；Described second understructure 302 includes the 11st oblique honeycomb being sequentially connected in 111,12 oblique honeycomb
112nd, the 3rd horizontal auxetic is while in 23,13 oblique honeycomb, the 113, the 14th oblique honeycomb is in 114 and five horizontal honeycombs
35；3rd horizontal auxetic while 23 with five horizontal honeycombs while 35 be parallel to each other；11st oblique honeycomb side 111 is oblique with the 12nd
Honeycomb is 113 equal with the angle between the 14th oblique honeycomb side 114 in the angle between 112 and 13 oblique honeycomb,
12nd oblique honeycomb when 112 and three horizontal auxetic 23 between angle and the 3rd horizontal auxetic side 23 oblique with the 13rd
Angle between honeycomb side 113 is equal；11st oblique honeycomb is 114 horizontal with regard to the 3rd when 111 and 14 oblique honeycomb
The perpendicular bisector axial symmetry on auxetic side 23, the 12nd oblique honeycomb 113 laterally draws with regard to the 3rd when 112 and 13 oblique honeycomb
The perpendicular bisector axial symmetry on swollen side 23；Described first oblique honeycomb in 11, the second oblique honeycomb the 12, the 3rd oblique honeycomb side 13,
4th oblique honeycomb is the 17, the 8th oblique while in 14, five oblique honeycomb, the 15, the 6th oblique honeycomb is in 16, seven oblique honeycomb
Honeycomb the 111, the 12nd oblique honeycomb while the 19, the tenth oblique honeycomb is in 10,11 oblique honeycomb in 18, nine oblique honeycomb
The equal length on the 113 and the 14th oblique honeycomb side 114 in 112,13 oblique honeycomb, the first horizontal auxetic side 21,
Two horizontal auxetic when 22 and three horizontal auxetic 23 equal length, the first horizontal honeycomb in 31, the second horizontal honeycomb 32,
3rd horizontal honeycomb in 33, four horizontal honeycomb 34 and the 5th horizontal honeycomb side 35 equal length；Described superstructure 101
With odd-level media layer damage 201 pass through the first horizontal honeycomb while 31 with three horizontal honeycombs while 33 carry out interlayer and be connected, odd-level
Media layer damage 201 and the first understructure 301 are passed through the second horizontal honeycomb and 34 are carried out interlayer company when 32 and four horizontal honeycombs
Connect, superstructure 101 and even level media layer damage 202 pass through the first horizontal honeycomb and 33 carry out layer when 31 and three horizontal honeycombs
Between connect, even level media layer damage 202 and the second understructure 302 are by the 3rd horizontal honeycomb when 33 and five horizontal honeycombs
35 are attached.
Described first oblique honeycomb while 11 length, the first horizontal honeycomb while 31 length and the first horizontal auxetic side 21 length
Degree ratio is 1:1:2；First horizontal auxetic when 21 and the second oblique honeycomb 12 between angle, the tenth oblique honeycomb side 10 with
Second horizontal auxetic, 112 and the 3rd angles between horizontal auxetic side 23 in the angle between 22 and 12 oblique honeycomb are
60 °, the first oblique honeycomb when 11 and the second oblique honeycomb 12 between angle, the first horizontal honeycomb side 31 and the 4th oblique honeybee
Nest is in the angle between 14, the second horizontal honeycomb 32 and when the 5th angle between 15 for the oblique honeycomb, seven oblique honeycombs
17 and the 8th oblique honeycomb in the angle between 18, eight oblique honeycombs 18 and the 4th angles between horizontal honeycomb side 34,
11st oblique honeycomb when 111 and 12 oblique honeycomb 112 between angle and the 14th oblique honeycomb side 114 and the 5th
Laterally the angle between honeycomb side 35 is 120 °.
As shown in figure 3, by sharing the first horizontal auxetic in 21, the second horizontal auxetic 22 and the 3rd horizontal auxetic side 23
And the first oblique honeycomb 11 of the free end points horizontal for a grid first auxetic side 31 and another grid is oblique with the 5th
To honeycomb while 15 intersection point, three horizontal honeycombs while 33 free end points fiveth oblique honeycomb side 15 corresponding with another grid
End points, the second horizontal auxetic while 22 free end points and another grid seven oblique honeycombs while 17 free end points and
Five horizontal honeycombs are in 11 oblique honeycomb of 35 free end points and another grid 111 and the 5th oblique honeycomb side 15
Intersection point is sequentially connected, described shock proof hybrid grid structure repeated arrangement.
A kind of manufacture method of this structure given below.Using aluminium flake roll forming Layered manufacturing is gone out superstructure 101,
Monolayer media layer damage 2, the first understructure 301 and the second understructure 302, then according to total number of plies of monolayer media layer damage 2
Number stack in order, by bonding or be welded to connect each layer and form integral honeycomb structure.
The manufacture method of superstructure 101, the first understructure 301 and the second understructure 302 is: first passes through two
The first roller 4 with rectangle gear hobbing and the second roller 5 make aluminium flake be pressed into rectangular corrugated shape, then the aluminium flake of first one-step forming are put into
In mould 6, post forming is carried out to aluminium flake by pressure head 7 and pressure head 8, obtain superstructure 101, the first understructure 301 and
Second understructure 302, as shown in Figure 4.
For monolayer media layer damage 2, directly aluminium flake molding can be made, as Fig. 5 institute by two rollers 9 with trapezoidal gear hobbing
Show.
Superstructure 101 after molding, monolayer media layer damage 2, the first understructure 301 and the second understructure 302
According to total number of plies of monolayer media layer damage 2, by after the order arrangement in Fig. 6 a, Fig. 6 b and Fig. 6 c directly in adjacent first the drawing of correspondence
Swollen 32, the 3rd horizontal while in the 21, second widthwise edge 22, three horizontal auxetic, the 23, first horizontal honeycomb is in 31, the second horizontal honeycomb
To honeycomb in 33, four horizontal honeycomb 34 apply glue with the 5th horizontal honeycomb side 35 or being directly welded to connect together with
Can get whole hybrid grid structure.
Hereinafter kinetics finite element simulation is carried out to this hybrid grid structure dynamic in deformation process with research structure
Deformational behavior and energy absorbing efficiency.
As shown in fig. 7, illustrating the malformation figure after rear yielded fastening network is hit.
Its deformation process is as follows:
1) elastic deformation process, network snakelike folded-sheet honeycomb structure side generation in the case of being initially subject to small load of the present invention
Reversible elastic bending deflection, its stress-strain diagram is a skew lines in the starting stage, as shown in fig. 7, it becomes in elasticity
The energy absorbing during shape is close with normal cellular.
2) plastic history, including three phases
1. yielding stage before: the first oblique honeycomb of present configuration the 12, the 3rd oblique honeybee in 11, the second oblique honeycomb
Nest the 18, the 9th oblique honeycomb side 19 and while the 14, the 7th oblique honeycomb is in 17, eight oblique honeycomb in 13, four oblique honeycomb
Tenth oblique honeycomb is 113 while in 10,11 oblique honeycomb, the 111, the 12nd oblique honeycomb is in 112,13 oblique honeycomb
With the bending fold deformation first of the 14th oblique honeycomb side 114；Between first oblique honeycomb is when 11 and the second oblique honeycomb 12
Angle, the second oblique honeycomb when 12 and the first horizontal auxetic 21 between angle, the 3rd oblique honeycomb side 13 oblique with the 4th
To honeycomb in the angle between 14, seven oblique honeycombs 17 and the 8th angles between oblique honeycomb side 18, the 9th oblique honeybee
Nest when 19 and ten oblique honeycombs 10 between angle, the tenth oblique honeycomb in 10 and the second horizontal auxetic while 22 between folder
Angle, the 11st oblique honeycomb when 111 and 12 oblique honeycomb 112 between angle, the 12nd oblique honeycomb side 112 and
Three horizontal auxetic angle between the 23 and the 13rd oblique honeycomb side 113 and in the angle between 23, three horizontal auxetic
13 oblique honeycombs when 113 and 14 oblique honeycomb 114 between angle reduce, the 4th oblique honeycomb side 14 and first is horizontal
To honeycomb in the angle between 31, eight oblique honeycombs 18 and the 4th angles between horizontal honeycomb side 34, the 4th horizontal honeybee
Nest when 34 and nine oblique honeycombs 19 between angle and the 14th oblique honeycomb in 114 and five horizontal honeycombs while 35 between
Angle increase, the first oblique honeycomb when 11 and the second oblique honeycomb 12 between, the 3rd oblique honeycomb side 13 oblique with the 4th
Honeycomb while between 14, seven oblique honeycombs while 17 and the 8th oblique honeycomb between 18, nine oblique honeycombs while 19 oblique with the tenth
To honeycomb while between 10,11 oblique honeycomb while the 111 and the 12nd oblique honeycomb between 112 and during 13 oblique honeycomb
Fold between 113 and the 14th oblique honeycomb side 114 and make contact to flat, make the first horizontal auxetic side 21, the second horizontal auxetic
When 22 and three horizontal auxetic 23 with the 5th oblique honeycomb side 15 in adjacent monolayer media layer damage 2, the second horizontal honeycomb
Form a quadrilateral structure between when 32 and six oblique honeycombs 16, and the 5th oblique honeycomb side 15, the 3rd horizontal honeycomb
In 33, six oblique honeycomb, 16 and the 3rd relative positions between horizontal honeycomb side 33 and angle keep constant；After folding
First oblique honeycomb is the 14, the 7th oblique while in 11, the second oblique honeycomb, the 12, the 3rd oblique honeycomb is in 13, four oblique honeycomb
Honeycomb the 10, the 11st oblique honeycomb side while the 18, the 9th oblique honeycomb is in 19, ten oblique honeycomb in 17, eight oblique honeycomb
111st, the 12nd oblique honeycomb is comprised in one in the 113 and the 14th oblique honeycomb side 114 in 112,13 oblique honeycomb
In the new tetragon being formed；The stress-strain diagram of this process becomes the straight line of a level, and energy absorption and normal cellular
Plastic history is close.As shown in figure 8, being hit with traditional regular hexagon honeycomb texture for this shock resistance hybrid grid structure
When stress strain simulation curve comparison figure, the wherein longitudinal strain of x-axis representative structure, y-axis representative structure stress value.
2. yielding stage after: present configuration continue pressurized, the first oblique honeycomb when 11 and the second oblique honeycomb 12 it
Between, the 3rd oblique honeycomb when 13 and four oblique honeycombs 14 between, the 7th oblique honeycomb in 17 and eight oblique honeycombs while 18
Between, the 9th oblique honeycomb when 19 and ten oblique honeycombs 10 between, the 11st oblique honeycomb side 111 and the 12nd oblique honeybee
Nest is in completely densified between the 113 and the 14th oblique honeycomb side 114 between 112 and during 13 oblique honeycomb, therefore surplus
The 5th remaining oblique honeycomb 16 starts to produce flexural deformation when 15 and six oblique honeycombs, i.e. the new tetragon being formed and knot
The original regular hexagon of structure starts to occur bending and deformation；Now described structure can be regarded as one kind with respect to not deformed front material
The relatively low porous material of porosity, therefore its stress-strain diagram starts slowly to climb, and has exceeded traditional cellular material,
As shown in figure 8, therefore this structure can absorb more energy in this stage than normal cellular.
3. packing stage: now structure has been compacted conquassation completely, energy absorption rely primarily on while while between phase
Mutual friction and sliding, similar to the energy absorption process of the normal cellular being compacted.
Analyzed by above-mentioned deformation process it is recognised that the raising of the shock resistance of present configuration is bent after mainly appearing on
Take the stage.
The size of plastic dissipated energy can reflect energy absorption capability during being hit for the structure, as shown in figure 9,
Wherein x-axis represents the time, the plastic dissipated energy value of y-axis representative structure, when total number of plies of media layer damage 2 is 1,2 and 3, this
The plastic dissipated energy total size of the network of invention mixing is all bigger than legacy cellular structure in the rear yielded fastening stage,
The shock resistance of therefore structure is higher.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not subject to above-described embodiment
Limit, other any spirit without departing from the present invention and the change made under principle, modification, replacement, combine, simplify,
All should be equivalent substitute mode, be included within protection scope of the present invention.
Claims (6)
1. a kind of shock proof hybrid grid structure it is characterised in that the included superstructure (101) stacking gradually connection,
Odd-level media layer damage (201) and the first understructure (301)；
Or include stacking gradually superstructure (101), even level media layer damage (202) and second understructure (302) of connection；
Described superstructure (101) include the first oblique honeycomb of being sequentially connected in (11), the second oblique honeycomb (12), first
Laterally auxetic is while in (21), three oblique honeycombs, (13), the 4th oblique honeycomb are in (14) and the first horizontal honeycomb (31)；First
Laterally auxetic (31) when (21) are with the first horizontal honeycomb is parallel to each other；First oblique honeycomb is when (11) are with the second oblique honeycomb
(12) angle between and the 3rd oblique honeycomb angle between (14) when (13) are with four oblique honeycombs are equal, and second is oblique
Honeycomb when (12) and the first horizontal auxetic the angle between (21) and the first horizontal auxetic when (21) are with three oblique honeycombs
(13) angle between is equal；First oblique honeycomb when (11) and four oblique honeycombs (14) with regard to the first horizontal auxetic side
(21) perpendicular bisector axial symmetry, the second oblique honeycomb when (12) and three oblique honeycombs (13) with regard to the first horizontal auxetic side
(21) perpendicular bisector axial symmetry；Described odd-level media layer damage (201) includes the monolayer media layer damage that odd number stacks gradually
(2), even level media layer damage (202) includes the monolayer media layer damage (2) that even number stacks gradually；Described monolayer media layer damage
(2) the 5th oblique honeycomb that is sequentially connected (32), the 6th oblique honeycomb side (16) and the in (15), the second horizontal honeycomb are included
Three horizontal honeycomb sides (33)；Second horizontal honeycomb (33) when (32) are with three horizontal honeycombs is parallel to each other；5th oblique honeycomb
When (15) and the second horizontal honeycomb, the angle between (32) and the second horizontal honeycomb are when (32) are with six oblique honeycombs (16)
Between angle equal；5th oblique honeycomb when (15) and six oblique honeycombs (16) with regard to the second horizontal honeycomb side (32)
Perpendicular bisector axial symmetry；By sharing the second horizontal honeycomb when (32) or three horizontal honeycombs between monolayer media layer damage (2)
(33) carry out interlayer connection, and n-th layer monolayer media layer damage (2) and (n-1)th layer of monolayer media layer damage (2) are with regard to its common edge the
Two horizontal honeycombs (33) axial symmetry when (32) or three horizontal honeycombs, wherein, n is positive integer；Described first understructure
(301) include the 7th oblique honeycomb that is sequentially connected in (17), eight oblique honeycombs (18), the 4th horizontal honeycomb side (34),
9th oblique honeycomb (10) and second horizontal auxetic side (22) in (19), ten oblique honeycombs；Described 4th horizontal honeycomb side
(34) it is parallel to each other with the second horizontal auxetic side (22)；Described 7th oblique honeycomb in (17) and eight oblique honeycombs (18) it
Between angle and the 9th oblique honeycomb angle between (10) when (19) are with ten oblique honeycombs equal, the 8th oblique honeycomb side
(18) and when angle between (34) for the 4th horizontal honeycomb and four horizontal honeycombs (34) and the 9th oblique honeycomb side (19) it
Between angle equal；7th oblique honeycomb when (17) and ten oblique honeycombs (10) with regard in the 4th horizontal honeycomb side (34)
Vertical line axial symmetry, the 8th oblique honeycomb when (18) and nine oblique honeycombs (19) with regard in the 4th horizontal honeycomb side (34) hang down
Bobbin is symmetrical；The 11st oblique honeycomb side (111) that the inclusion of described second understructure (302) is sequentially connected, the 12nd oblique
Honeycomb while in (112), three horizontal auxetic, (23), the 13rd oblique honeycomb are in (113), 14 oblique honeycomb (114) and
5th horizontal honeycomb side (35)；3rd horizontal auxetic (35) when (23) are with five horizontal honeycombs is parallel to each other；Described 11st
Oblique the honeycomb angle between (112) and the 13rd oblique honeycomb side (113) and the tenth when (111) and 12 oblique honeycomb
Angle between four oblique honeycomb sides (114) is equal, and the 12nd oblique honeycomb is when (112) and three horizontal auxetic between (23)
Angle and the 3rd horizontal auxetic angle between (113) when (23) are with 13 oblique honeycomb equal；11st oblique honeybee
(114), with regard to the perpendicular bisector axial symmetry of the 3rd horizontal auxetic side (23), the 12nd is oblique when (111) and 14 oblique honeycomb for nest
To honeycomb when (112) and 13 oblique honeycomb (113) with regard to the perpendicular bisector axial symmetry of the 3rd horizontal auxetic side (23)；Described
First oblique honeycomb (14) while (12), the 3rd oblique honeycomb are in (13), four oblique honeycombs in (11), the second oblique honeycomb,
5th oblique honeycomb (18) while (16), the 7th oblique honeycomb are in (17), eight oblique honeycombs in (15), six oblique honeycombs,
9th oblique honeycomb is while in (19), ten oblique honeycombs, (10), the 11st oblique honeycomb are in (111), 12 oblique honeycomb
(112), the 13rd oblique honeycomb when (113) and 14 oblique honeycomb (114) equal length, the first horizontal auxetic side
(21), the second horizontal auxetic when (22) and three horizontal auxetic (23) equal length, the first horizontal honeycomb side (31), second
Laterally honeycomb while in (32), three horizontal honeycombs, (33), the 4th horizontal honeycomb are in (34) and five horizontal honeycombs (35) length
Degree is equal；It is horizontal with the 3rd that described superstructure (101) and odd-level media layer damage (201) pass through the first horizontal honeycomb side (31)
Honeycomb side (33) carries out interlayer connection, and odd-level media layer damage (201) passes through the second horizontal honeycomb with the first understructure (301)
When (32) are with four horizontal honeycombs, (34) carry out interlayer and are connected, and superstructure (101) is passed through with even level media layer damage (202)
First horizontal honeycomb (33) when (31) are with three horizontal honeycombs carries out interlayer and is connected, even level media layer damage (202) and second
Understructure (302) is attached by the 3rd horizontal honeycomb (35) when (33) are with five horizontal honeycombs.
2. shock proof hybrid grid structure according to claim 1 is it is characterised in that described first oblique honeycomb side
(11) length, the first horizontal honeycomb lenth ratio of (21) in (31) length and the first horizontal auxetic are 1:1:2；First is horizontal
To auxetic when (21) and the second oblique honeycomb the angle between (12), the tenth oblique honeycomb in (10) and the second horizontal auxetic
(22) angle between and the 12nd oblique honeycomb angle between (23) when (112) and three horizontal auxetic are 60 °, the
One oblique the honeycomb angle between (12), the first horizontal honeycomb side (31) and the 4th oblique honeybee when (11) and the second oblique honeycomb
Nest angle between (32) and the 5th oblique honeycomb side (15), the 7th oblique in the angle between (14), the second horizontal honeycomb
Honeycomb when (17) and eight oblique honeycombs the angle between (18), the 8th oblique honeycomb in (18) and four horizontal honeycombs
(34) angle between, the 11st oblique honeycomb angle and the 14th between (112) when (111) and 12 oblique honeycomb
Oblique honeycomb angle between (35) when (114) and five horizontal honeycombs is 120 °.
3. shock proof hybrid grid structure according to claim 1 is it is characterised in that described first horizontal by sharing
Auxetic (22) and the 3rd horizontal auxetic side (23) in (21), the second horizontal auxetic, horizontal for a grid first honeycomb side
(31) free end points and the first oblique honeycomb of another hybrid grid structure (15) when (11) are with five oblique honeycombs
During five oblique honeycomb corresponding in the free end points of (33) and another hybrid grid structure of intersection point, the 3rd horizontal honeycomb
(15) end points, the second horizontal auxetic in seven oblique honeycomb of the free end points of (22) and another grid (17) freedom
End points and the 5th horizontal honeycomb are in 11 oblique honeycomb of the free end points of (35) and another hybrid grid structure
(111) it is sequentially connected with the intersection point of the 5th oblique honeycomb side (15), described hybrid grid structure repeated arrangement.
4. the shock proof hybrid grid structure according to any one of claims 1 to 3 is it is characterised in that prepare described anti-
The material of the hybrid grid structure of impact is aluminium sheet, plank, cardboard or macromolecular material；Prepare described shock proof hybrid grid
The method of structure is roll forming method, method of laser welding, board pasted method, ultraviolet light polymerization method or speed forming method.
5. shock proof hybrid grid structure according to claim 4 is it is characterised in that described speed forming method is vertical
Body Stereolithography method, selective laser sintering process, layer separated growth method or fused deposition modeling method.
6. a kind of compression claim 1 described in shock proof hybrid grid structure compression method it is characterised in that include with
Lower step:
Step 1, to the first horizontal auxetic, in (21), the second horizontal auxetic, (22) and the 3rd horizontal auxetic side (23) apply pressure
Power；
Step 2, the first oblique honeycomb (12), the 3rd oblique honeycomb side (13), the 4th oblique honeybee in (11), the second oblique honeycomb
Nest (19) and the tenth oblique honeybee while in (14), seven oblique honeycombs, (17), the 8th oblique honeycomb are in (18), nine oblique honeycombs
Nest while in (10), 11 oblique honeycomb, (111), the 12nd oblique honeycomb are in (112), 13 oblique honeycomb (113) and
14th oblique honeycomb side (114) bending fold deformation；First oblique honeycomb is when (11) and the second oblique honeycomb between (12)
Angle, the second oblique honeycomb when (12) and the first horizontal auxetic the angle between (21), the 3rd oblique honeycomb side (13) with
4th oblique honeycomb folder between (17) and the 8th oblique honeycomb side (18) in the angle between (14), seven oblique honeycombs
Angle, the 9th oblique the honeycomb angle between (10), the tenth oblique honeycomb side (10) and second when (19) and ten oblique honeycombs
Laterally auxetic folder between (111) and the 12nd oblique honeycomb side (112) in the angle between (22), 11 oblique honeycomb
Angle, the 12nd oblique the honeycomb angle between (23), the 3rd horizontal auxetic side (23) and the when (112) and three horizontal auxetic
(113) and the 14th oblique honeycomb side (114) when angle between (113) for the 13 oblique honeycombs and 13 oblique honeycomb
Between angle all reduce, the 4th oblique the honeycomb angle between (31), the 8th oblique honeybee when (14) and the first horizontal honeycomb
Nest when (18) and four horizontal honeycombs the angle between (34), the 4th horizontal honeycomb in (34) and nine oblique honeycombs (19)
Between angle and the 14th oblique honeycomb angle between (35) when (114) and five horizontal honeycombs all increase, first
Oblique honeycomb is when (11) and the second oblique honeycomb between (12), the 3rd oblique honeycomb is when (13) are with four oblique honeycombs (14)
Between, the 7th oblique honeycomb when (17) and eight oblique honeycombs between (18), the 9th oblique honeycomb side (19) oblique with the tenth
Honeycomb while between (10), 11 oblique honeycomb while between (111) and the 12nd oblique honeycomb side (112) and the 13rd oblique honeybee
Nest when (113) and 14 oblique honeycomb between (114) all fold make contact to flat, make the first horizontal auxetic side (21),
Second horizontal auxetic (23) and the 5th oblique honeycomb in adjacent monolayer media layer damage (2) when (22) and three horizontal auxetic
Form a quadrilateral structure in (15), the second horizontal honeycomb, the 5th is oblique between (32) and the 6th oblique honeycomb side (16)
Honeycomb phase between (33) while (33), the 6th oblique honeycomb are in (16) and three horizontal honeycombs in (15), three horizontal honeycombs
Constant is kept to position and angle；After folding first oblique honeycomb (12), the 3rd oblique honeybee in (11), the second oblique honeycomb
Nest (18), the 9th oblique honeybee while in (13), four oblique honeycombs, (14), the 7th oblique honeycomb are in (17), eight oblique honeycombs
Nest (112) while (10), the 11st oblique honeycomb are in (111), 12 oblique honeycomb in (19), ten oblique honeycombs, the tenth
Three oblique honeycombs (114) when (113) and 14 oblique honeycomb are comprised in the tetragon re-forming；This process should
Stress-strain curve becomes the straight line of a level；
Step 3, pressure is continued to described shock proof hybrid grid structure, the first oblique honeycomb side (11) is oblique with second
Honeycomb is between (12), three oblique honeycombs while (13) and the 4th oblique honeycomb between (14), seven oblique honeycombs while (17)
And the 8th oblique honeycomb while between (18), nine oblique honeycombs while between (19) and the tenth oblique honeycomb side (10), the 11st oblique
To honeycomb when (111) and 12 oblique honeycomb between (112) and the 13rd oblique honeycomb side (113) and the 14th oblique honeybee
Nest side is fully densified between (114), and described 5th oblique honeycomb (16) when (15) and six oblique honeycombs starts to produce curved
Bent deformation, makes the tetragon re-forming and the original regular hexagon of structure start to occur bending and deformation；Now, described anti-
The hybrid grid structure of impact regards a kind of relatively low porous material of porosity with respect to not deformed front material as, therefore, described
The stress-strain diagram of shock proof hybrid grid structure starts to climb；
After step 4, described shock proof hybrid grid structure are compacted conquassation completely, the absorption of energy rely on while while between
Phase mutual friction and sliding.
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| CN106678221B (en) * | 2016-07-09 | 2019-10-08 | 李萌 | A kind of honeycomb and design method improving structural strength |
| EP3395561B1 (en) * | 2017-04-26 | 2020-12-30 | Airbus Operations, S.L. | Three dimensional auxetic structure, manufacturing method and tooling |
| US20180311927A1 (en) * | 2017-04-26 | 2018-11-01 | Ford Global Technologies, Llc | Cellular structure |
| CN108488290B (en) * | 2018-05-23 | 2023-12-19 | 中国工程物理研究院总体工程研究所 | Reusable low-speed impact energy absorbing device |
| CN109210361B (en) * | 2018-09-29 | 2021-09-03 | 中山大学 | Two-dimensional negative Poisson ratio structure |
| CN112922985A (en) * | 2019-12-06 | 2021-06-08 | 同济大学 | Negative Poisson ratio type vertical composite energy absorption structure with internal dislocation and interface alignment |
| CN112922992B (en) * | 2019-12-06 | 2022-07-05 | 同济大学 | Planar small-half-cycle interface type negative Poisson's ratio-honeycomb composite energy absorption structure |
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