CN109334139A - Lattice structure and its cellular construction, truss core structure - Google Patents
Lattice structure and its cellular construction, truss core structure Download PDFInfo
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- CN109334139A CN109334139A CN201811435722.4A CN201811435722A CN109334139A CN 109334139 A CN109334139 A CN 109334139A CN 201811435722 A CN201811435722 A CN 201811435722A CN 109334139 A CN109334139 A CN 109334139A
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- connecting rod
- cellular construction
- lattice structure
- pedestal
- lattice
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
- B32B3/22—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of spaced pieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
Abstract
The present invention relates to a kind of lattice structure and its cellular constructions, truss core structure.The cellular construction includes the connecting rod of the first pedestal, the second pedestal and connection first pedestal and second pedestal；Angle between the connecting rod and horizontal plane is set as θ, 40 °≤θ≤50 °, wherein: the length of the connecting rod is L, width of the connecting rod along the cross section perpendicular to vertical plane where its central axes is W, the connecting rod is along the cross section perpendicular to vertical plane where its central axes with a thickness of T, and T≤W, 0.1≤W/L≤0.15.Invention unit structural plasticity should become smaller, it can be realized the adjusting of energy absorption curve by the design of the parameter of cellular construction, and cellular construction can be made to restore deformation by external force, it reuses, to expand the application range of lattice structure and truss core structure as made of the dot matrix unit spliced.
Description
Technical field
The present invention relates to energy-absorbing material technical fields, more particularly to lattice structure and its cellular construction, truss core knot
Structure.
Background technique
Energy-absorbing material has in the protection of the protecting against shock and precision parts of personnel protection, building damping, automobile and aircraft
It is widely used.Traditional energy-absorbing material include rectangular thin walled beam, bellows, cellular structural material, egg carton formula structural material,
Foam metal material, lattice material etc..
Wherein, rectangular thin walled beam structure is simple, energy absorption ability is strong, is widely used in the collision energy-absorbing of automobile.Such as
Shown in Fig. 1, when by the impact load, rectangular thin walled beam is plastically deformed metal material by lateral buckling, and then inhales
Receive impact force.Rectangular thin walled beam can suction by adjusting the modes such as welding method, wall thickness, cross section and predeformation, to structure
Energy ability is adjusted.But due to malformation during, metal introduces plastic strain, therefore deformation process is irreversible,
Structure cannot reuse after bearing one-shot load.
Egg carton formula structural material is that various alloys are prepared by drop stamping or cold stamping, and energy absorption ability is several with its
What shape is related.It is having the deformation of very little length that can absorb a large amount of energy upwards along loading side.In the effect of shock loading
Under, its energy-absorbing rate can be expressed as the function using sectional dimension as variable.So, in a particular application, it can according to need
Pair cross-section size optimizes, and obtains the optimal cross sectional shape of energy-absorbing.Studies have shown that cone angle is bigger, egg carton formula structural material
Energy-absorbing rate is higher, but on the other hand, cone angle is bigger, and the punch forming of egg carton formula structural material is more difficult, because in punching press
In the process, a possibility that cone angle is bigger, and steel plate cracks is bigger.
Foam metal material has the spy that can be undertaken large deformation under compressive load effect and maintain relative constant stress
Property, in addition the features such as its is light, makes it be widely used in anti-collision structure, blast resistance construction.As shown in Figure 2 a, open cell foam metal material
It is connected, is interconnected by hole rib between the Kong Yukong of material, aeration is good, therefore has heat exchange heat-sinking capability and mistake well
Filter and separating capacity.Its main preparation methods is to obtain porous preform first, then carries out seepage flow using porous preform, sinks
The techniques such as product, sintering, it is final to obtain open cell foam metal material.The characteristics of open cell foam metal material, is structure-controllable, but
Preparation process is more complex, is not easy to accomplish scale production.As shown in Figure 2 b, in addition to hole between closed-cell foam metal material hole and hole
Rib connection, there are also hole walls, and pass is the circular hole of almost spherical, porosity height, large specific surface area.It is compared with entity structure, by
In the presence of stomata, closed-cell aluminum foam has high specific strength, specific stiffness and longer compression travel.Its prepare it is relatively easy, can
It is directly obtained by foam process, comprising: foam melt method is directly blown gas foaming, solid gas eutectic freezing method, powder compacting
(PCM) method of fusing etc..But due to malformation during, metal introduces plastic strain, therefore deformation process is irreversible, knot
After bearing one-shot load, shock resistance can be reduced greatly structure, or even can not be reused completely.
Lattice material is a kind of space net rack class highly ordered porous materials being made of node and connection bar unit, has vibration damping
The features such as property is good, designability is strong.When being impacted, impact energy is converted by being plastically deformed on a large scale inside lattice material
For strain energy, to can absorb a large amount of impact energy, therefore be conducive to improve surge guard efficiency.Tetrahedron lattice material is pressurized
Rear stress-strain diagram is as shown in figure 3, as can be seen from Figure 3, since the stress of structure is consistently greater than 0, in compression process,
Structure only has this rock-steady structure of initial configuration always, and when bearing great impact load, very big modeling can occur for structure
Property deformation, shock resistance can reduce greatly.
Therefore, rectangular thin-walled energy-absorbing beam, egg carton formula structural material, foam metal material and lattice material although all have compared with
Good energy absorption characteristics, but there is also the defect that deformation is irreversible, preparation is difficult, strongly limit the application range of energy-absorbing material
And repeatability.
Summary of the invention
Based on this, it is necessary to be directed to energy-absorbing material problem, provide a kind of lattice structure and its cellular construction, truss core knot
Structure；The cellular construction plastic strain of the lattice structure is small, can be realized energy absorption by the design of the parameter of cellular construction
The adjusting of curve, and cellular construction can be made to restore deformation by external force, it reuses, thus, it expands by the dot matrix list
The application range of lattice structure and truss core structure that member is spliced.
Cellular construction based on lattice structure, the cellular construction include described in the first pedestal, the second pedestal and connection
The connecting rod of first pedestal and second pedestal；
Angle between the connecting rod and horizontal plane is set as θ, and 40 °≤θ≤50 °, in which:
The length of the connecting rod is L, and width of the connecting rod along the cross section perpendicular to vertical plane where its central axes is
W, the connecting rod along cross section perpendicular to vertical plane where its central axes with a thickness of T, and T≤W, 0.1≤W/L≤0.15.
The link mechanism includes one of cylindrical structure, prism structure in one of the embodiments,.
The prism structure is tetragonous rod structure in one of the embodiments,.
The connecting rod side is provided with reinforcement part in one of the embodiments, and the reinforcement part is along the length of connecting rod
The length of extending direction is L1, the width along the cross section perpendicular to the vertical plane is W1, wherein 0.05≤L1/ L≤0.15,
1.1≤W1/W≤1.2。
The connecting rod is described in being provided at the position of the first pedestal or the second pedestal in one of the embodiments,
The distance between the length direction of reinforcement part, the reinforcement part and neighbouring first pedestal or the second pedestal along the connecting rod
For d, wherein 0.1≤d/L≤0.3.
The quantity of the reinforcement part is multiple in one of the embodiments, multiple reinforcement part interval settings.
The connecting rod is each provided with one at the position of close first pedestal and the second pedestal in one of the embodiments,
A reinforcement part.
First pedestal and/or second pedestal include attachment base and are convexly equipped in institute in one of the embodiments,
The interconnecting piece of attachment base is stated, the connecting rod intersects to the interconnecting piece.
The interconnecting piece includes the joint face for connecting the connecting rod in one of the embodiments, and the connecting rod hangs down
Directly in the joint face.
Shape of the interconnecting piece along the section of the vertical plane includes part circular, three in one of the embodiments,
It is one of angular, trapezoidal.
The attachment base is provided with splicing construction in one of the embodiments, the splicing construction be used for from it is different
Mutual split between the cellular construction is fixed；And/or
The mutual split that the splicing construction is used for external agency is fixed.
The cellular construction is structure as a whole in one of the embodiments,.
In the cellular construction of above-mentioned lattice structure, by the design of parameter, make rock-steady structure there are two cellular construction tools,
In rock-steady structure be structure when cellular construction is initially undeformed, i.e. the first rock-steady structure, another rock-steady structure is single
Structure corresponding to meta structure minimal strain energy value, i.e. the second rock-steady structure.Under the two rock-steady structures, external influence is removed
Power, cellular construction will not deformation occurs, and structure is fixed.And after cellular construction compression, cellular construction turns from the first rock-steady structure
During changing to the second rock-steady structure, cellular construction will absorb big energy, which is equal to two rock-steady structure strain energies
Difference, it is thus possible to the plastic strain of reduction unit structure.And it is plastically deformed in the plastic deformation regime of cellular construction
Afterwards, which can restore deformation by external force, to realize reuse.
In addition, the adjustment of the parameter by cellular construction, thus it is possible to vary the strain energy pole of the second rock-steady structure of cellular construction
Small value, so as to realize the adjusting of cellular construction energy absorption curve, to adapt to different use demands.
Lattice structure, the lattice structure is by multiple as above-mentioned cellular construction is spliced.
In one of the embodiments, the connecting rod of multiple lattice structures be spliced to form pyramid dot matrix structure,
At least one of Kagome lattice structure, tetrahedron lattice structure, fishing net shaped lattice structure.
In one of the embodiments, in the fishing net shaped lattice structure, the position of the crossed node between cellular construction
Or the following position directly of the crossed node, it is provided with reinforcing rod.
Above-mentioned lattice structure is spliced by said units array of structures, so as to realize lattice structure to large area
Impact energy absorption, reduce the plastic deformation of lattice structure, and after deforming, dot matrix can be made by external force
Structure restores to the original state and reuses.
Truss core structure, the truss core structure include the first cover board, the be oppositely arranged with first cover board
Two cover boards, and the lattice structure being set between first cover board and second cover board.
Above-mentioned truss core structure can be realized the absorption to the impact energy of large area, reduce plastic deformation, and sending out
After the shape that changes, it can be made to restore to the original state and reuse by external force, can be widely applied to personnel protection, building subtracts
The fields such as shake, the protection of protecting against shock and precision parts of automobile and aircraft.
Detailed description of the invention
Fig. 1 is rectangular thin walled beam deformation process schematic diagram；
Fig. 2 is the macroscopic form schematic diagram of foam metal material, wherein a is open cell foam metal material: b is closed pore bubble
Foam metal material；
Fig. 3 is stress-strain curve when tetrahedron lattice material is pressurized, wherein a is that the stress-strain of test specimen 1 is bent
Line, b are the load-deformation curve of test specimen 2, and c is the load-deformation curve of test specimen 3, and d is numerical simulation curve；
Fig. 4 is the structural schematic diagram of the cellular construction of embodiment 1；
Fig. 5 is the structural schematic diagram of connecting rod in cellular construction shown in Fig. 4；
Fig. 6 is the structural schematic diagram after cellular construction shown in Fig. 4 is pressurized；
Fig. 7 is the force-displacement curve figure when cellular construction of the first parameter shown in Fig. 4 is pressurized；
Fig. 8 is strain energy-displacement curve figure when the cellular construction of the first parameter shown in Fig. 4 is pressurized；
Fig. 9 is the force-displacement curve figure when cellular construction of the second parameter shown in Fig. 4 is pressurized；
Figure 10 is strain energy-displacement curve figure when the cellular construction of the second parameter shown in Fig. 4 is pressurized；
Figure 11 is the force-displacement curve figure when cellular construction of third parameter shown in Fig. 4 is pressurized；
Figure 12 is strain energy-displacement curve figure when the cellular construction of third parameter shown in Fig. 4 is pressurized；
Figure 13 is the force-displacement curve figure when cellular construction of the 4th parameter shown in Fig. 4 is pressurized；
Figure 14 is strain energy-displacement curve figure when the cellular construction of the 4th parameter shown in Fig. 4 is pressurized；
Figure 15 is the force-displacement curve figure when cellular construction of the 5th parameter shown in Fig. 4 is pressurized；
Figure 16 is strain energy-displacement curve figure when the cellular construction of the 5th parameter shown in Fig. 4 is pressurized；
Figure 17 is the structural schematic diagram of the cellular construction of embodiment 2；
Figure 18 is the force-displacement curve figure when cellular construction of a parameter shown in Figure 17 is pressurized；
Figure 19 is strain energy-displacement curve figure when the cellular construction of a parameter shown in Figure 18 is pressurized；
Figure 20 is the structural schematic diagram of the cellular construction of embodiment 3；
Figure 21 is the assembling schematic diagram of the cellular construction of embodiment 3；
Figure 22 is the structural schematic diagram of the truss core structure of embodiment 4, wherein the lattice structure of Figure 22 a is fishing net shaped
Structure, the lattice structure of Figure 22 b are Kagome lattice structure, and the lattice structure of Figure 22 c is pyramid dot matrix structure.
In figure: 1, cellular construction；2, the first cover board；3, the second cover board；10, the first pedestal；11, connecting rod；12, the second base
Seat；13, reinforcing rod；100, interconnecting piece；101, attachment base；102, reinforcement part；103, splicing construction.
Specific embodiment
Hereinafter, will be by following specific embodiments to lattice structure provided by the invention and its cellular construction, truss core
Structure is described further.
Embodiment 1:
As shown in Figure 4 and Figure 5, the cellular construction 1 provided in this embodiment based on lattice structure includes the first pedestal 10, the
The connecting rod 11 of two pedestals 12 and connection first pedestal 10 and second pedestal 12.
Using x as horizontal plane, y is vertical plane as the frame of reference, under normal placement status, the connecting rod and horizontal plane
Between angle be set as θ.The length of the connecting rod is L, and the connecting rod is along the cross section perpendicular to vertical plane where its central axes
Width be W, the connecting rod is along the cross section perpendicular to vertical plane where its central axes with a thickness of T.
With θ=45 °, for W/L=0.12, T≤W is the first parameter designings of the present embodiment connecting rod 11.At this point, the bar
Part 11 is Euler-Bernoulli Jacob's beam, is analyzed using method for numerical simulation (plane strain model).The cellular construction of the present embodiment
After 1 is pressurized, the deformation in the vertical plane where wherein axis of connecting rod 11, structural schematic diagram is as shown in fig. 6, its force-displacement curve
As shown in fig. 7, strain energy-displacement curve is as shown in Figure 8.It can be seen that having part in the force-displacement curve of cellular construction 1
Section active force is less than 0, in the active force from being come back in the section more than or equal to 0 less than 0, in strain energy-displacement curve
Strain energy has a minimum point.Therefore, the tool of cellular construction 1 can be made there are two rock-steady structure, one of rock-steady structure is single
Structure when meta structure 1 is initial undeformed, i.e. the first rock-steady structure, another rock-steady structure are 1 minimal strain energy of cellular construction
The corresponding structure located of value, i.e. the second rock-steady structure.Under the two rock-steady structures, external forces are removed, cellular construction 1 is equal
Will not deformation occurs, structure is fixed.
At this point, cellular construction 1 is after compression, during being converted to the second rock-steady structure from the first rock-steady structure, unit
Structure 1 will absorb big energy, which is equal to the difference of two rock-steady structure strain energies, it is thus possible to reduction unit structure 1
Plastic strain.And after plastic deformation, the cellular construction 1 can by such as directly pulling, mechanical test instrument (such as stretching-machine)
Etc. external forces restore deformation, to realize reuse.
Numerical-Mode is utilized for W/L=0.12, T≤W is the second parameter designings of the present embodiment connecting rod 11 with θ=40 °
Quasi- method (plane strain model) is analyzed.Its force-displacement curve is as shown in figure 9, strain energy-displacement curve such as Figure 10 institute
Show.It can be seen that section of the active force less than 0 almost disappears in the force-displacement curve of cellular construction 1, strain energy-displacement is bent
Minimal strain energy value point also almost disappears in line.
Numerical-Mode is utilized for W/L=0.12, T≤W is the third parameter designings of the present embodiment connecting rod 11 with θ=50 °
Quasi- method (plane strain model) is analyzed.Its force-displacement curve is as shown in figure 11, strain energy-displacement curve such as Figure 12 institute
Show.It can be seen that section of the active force less than 0 almost disappears in the force-displacement curve of cellular construction 1, strain energy-displacement is bent
Minimal strain energy value point also almost disappears in line.
Numerical simulation is utilized for W/L=0.1, T≤W is the 4th parameter designings of the present embodiment connecting rod 11 with θ=45 °
Method (plane strain model) is analyzed.Its force-displacement curve is as shown in figure 13, and strain energy-displacement curve is as shown in figure 14.
It can be seen that section of the active force less than 0 almost disappears in the force-displacement curve of cellular construction 1, strain energy-displacement curve
Middle minimal strain energy value point also almost disappears.
Numerical-Mode is utilized for W/L=0.15, T≤W is the 5th parameter designings of the present embodiment connecting rod 11 with θ=45 °
Quasi- method (plane strain model) is analyzed.Its force-displacement curve is as shown in figure 15, strain energy-displacement curve such as Figure 16 institute
Show.It can be seen that section of the active force less than 0 almost disappears in the force-displacement curve of cellular construction 1, strain energy-displacement is bent
Minimal strain energy value point also almost disappears in line.
So the connecting rod 11 meets 40 °≤θ≤50 °, when T≤W, 0.1≤W/L≤0.15, cellular construction 1 can be made to have
There are two rock-steady structures.To the plastic strain of cellular construction 1 be made small, and after plastic deformation, cellular construction 1 can pass through
External force restores deformation, realizes and reuses.
Meanwhile the adjustment of the parameter of the connecting rod 11 of cellular construction 1 can be passed through, thus it is possible to vary the second of cellular construction 1 is stablized
The minimal strain energy value of structure, so as to realize the adjusting of 1 energy absorption curve of cellular construction.
It is appreciated that the cellular construction 1 is not limited when assembling application by modes of emplacement and placement status,
It can be using a certain reference plane in application structure as horizontal plane.
Specifically, 11 structure of connecting rod includes one of cylindrical structure, prism structure.Wherein, when connecting rod is circle
When column structure, T=W.
Wherein, the prism structure includes triangular prism structure, tetragonous rod structure, pentagonal prism structure etc., preferably quadrangular
Structure.And in tetragonous rod structure, the bottom surface of further preferably tetragonous rod structure is rectangle or square, so that quadrangular knot
Structure meets T≤W.
Specifically, first pedestal 10 includes attachment base 101 and the interconnecting piece 100 for being convexly equipped in the attachment base 101, institute
The intersection of connecting rod 11 is stated to the interconnecting piece 100.
Second pedestal 12 may also comprise attachment base 101 and the interconnecting piece 100 for being convexly equipped in the attachment base 101, described
Connecting rod 11 intersects to the interconnecting piece 100.
Wherein, the shape in section of the interconnecting piece 100 along the vertical plane include part circular, triangle, it is trapezoidal in
One kind.
The interconnecting piece 100 includes the joint face for connecting the connecting rod 11, and the connecting rod 11 is perpendicular to the connection
Face.To the angle of connecting rod 11 and joint face be prevented too small and generated when entire 1 stress deformation of cellular construction
Stress is concentrated, and entire cellular construction 1 is destroyed.
It is appreciated that multiple connecting rods 11 can be arranged along different directions on interconnecting piece 100.Such as, interconnecting piece 100 is along institute
Corresponding when the shape for stating the cross section of vertical plane is triangle, interconnecting piece 100 is tetragonous wimble structure, at this point, the four of rectangular pyramid
A inclined-plane can be used as the joint face that interconnecting piece 100 is used to connect connecting rod 11, connecting rod 11 can be respectively set on four joint faces,
And connecting rod 11 can be made perpendicular to joint face.
Wherein, the attachment base 101 is used for being interconnected and fixed between the different cellular constructions 1, alternatively, also
It can be used for being interconnected and fixed with external agency.The connection type can be welding, binder bonding etc..The external knot
Structure can be the cover board etc. of truss core structure.
The shape in section of the attachment base 101 along the vertical plane can be rectangle.
Specifically, the material of the cellular construction 1 can be high molecular polymer, metal material etc..When material is high score
When sub- polymer, cellular construction 1 can be produced by 3D printing method and be prepared, as long as input design drawing, process flow letter
It is single.When material is metal material, cellular construction 1 can produce preparation by the methods of model casting, pressing lap soldering.
Specifically, the cellular construction 1 is structure as a whole.To connecting rod 11 and the first pedestal 10 in cellular construction 1, the
The intersection stable structure of two pedestals 12.
Embodiment 2:
As shown in figure 17, on the basis of embodiment 1,11 side of connecting rod is provided with reinforcement part 102 to the present embodiment, adds
Strong portion 102 is used for the energy absorption curve of local modulation cellular construction 1.
The reinforcement part 102 is L along the length of 11 length direction of connecting rod1, along perpendicular to the transversal of the vertical plane
The width in face is W1, wherein 0.05≤L1/ L≤0.15,1.1≤W1/W≤1.2。
With θ=45 °, W/L=0.1, T≤W, L1/ L=0.5, W1/ W=1.1 is that the parameter designing of the embodiment connecting rod 11 is
Example, is analyzed using method for numerical simulation (plane strain model).Its force-displacement curve is as shown in figure 18, strain energy-displacement
Curve is as shown in figure 19.It is found that the energy that reinforcement part 102 can be used for local modulation cellular construction 1 is inhaled compared with Figure 13 and Figure 14
Receive curve.
Specifically, the connecting rod 11 is provided with the reinforcement part at the position of close first pedestal 10 or the second pedestal 12
102, the reinforcement part 102 and neighbouring first pedestal 10 or the second pedestal 12 are between the length direction of the connecting rod 11
Distance be d, wherein 0.1≤d/L≤0.3.
Specifically, the quantity of the reinforcement part 102 is multiple, the multiple interval of reinforcement part 102 settings.
It is appreciated that according to the needs of use, multiple reinforcement parts 102 can be arranged at close to the position of the first pedestal 10
Set place；Alternatively, being arranged at multiple reinforcement parts 102 at the position of the second pedestal 12；Alternatively, will it is multiple described plus
Strong portion 102 is separately positioned at the position of the first pedestal 10 and the second pedestal 12.
As shown in figure 17, connecting rod 11 described in the embodiment is in each at the position of the first pedestal 10 and the second pedestal 12
It is provided with the reinforcement part 102.
Moreover, according to the needs of use, multiple reinforcement parts 102 are L along the length of 11 length direction of connecting rod1, edge
Width perpendicular to the cross section of the vertical plane is W1Can be different, multiple reinforcement parts 102 and neighbouring first pedestal 10
Or second pedestal 12 along the distance between length direction of the connecting rod 11 be that d can also be different.
Embodiment 3:
As shown in figure 20, on the basis of embodiment 1, the attachment base 101 is provided with splicing construction to the present embodiment
103, mutual split of the splicing construction 103 between the different cellular constructions 1 is fixed, alternatively, the splicing
The mutual split that structure 103 can also be used in external agency is fixed.
Wherein, the splicing construction 103 is plug division or the concave part that can cooperate plug division engaging, the spelling mutually spliced
Matching design between binding structure 103.
Specifically, splicing construction 103 that the attachment base 101 of the first pedestal 10 of a cellular construction 1 is arranged and another
The splicing construction 103 that the attachment base 101 of first pedestal 10 of cellular construction 1 is arranged can engage, or with another unit knot
The splicing construction 103 that the attachment base 101 of second pedestal 12 of structure 1 is arranged can engage.Such as, four cellular constructions 1 can pass through spelling
The mutual split of binding structure 103 is fixed into structure as shown in figure 21.
It is appreciated that two cellular constructions 1 can also be made to pass through 103 phase of splicing construction by the change to splicing construction 103
Mutual split is fixed.Alternatively, designing splicing construction 103 according to the needs of use, make the cellular construction 1 for needing quantity that can pass through spelling
The mutual split of binding structure 103 is fixed.
Embodiment 4:
In the present embodiment, the lattice structure of array is spliced by multiple cellular constructions 1.So as to realize the dot matrix knot
Absorption of the structure to the impact energy of large area, reduces the plastic deformation of lattice structure, and after deforming, and can pass through external force
Effect makes lattice structure restore to the original state and reuse.
Then, the first cover board 2 is set in the side of the lattice structure, second be arranged in the opposite side of the first cover board 2
Cover board 3 constitutes truss core structure, make its can be widely applied to personnel protection, building damping, automobile and aircraft protecting against shock and
The fields such as the protection of precision parts.
As shown in Figure 22 a, multiple cellular constructions 1 are spliced to form fishing net shaped lattice structure.In fishing net shaped lattice structure
In, the position of the crossed node between the cellular construction 1 or the following position directly of the crossed node are provided with reinforcing rod
13, reinforcing rod 13 is used in fishing net shaped lattice structure stress deformation, two crossed nodes, Yi Jizheng for preventing reinforcing rod connected
Top crossed node deforms excessive and introduces too big plastic deformation.
In the embodiment, the underface position of the position of the crossed node between cellular construction 1 or the crossed node
It sets, is provided with reinforcing rod 13.
In view of the fishing net shaped lattice structure that cellular construction 1 is spliced only has limited thickness, therefore, for producing
When preparing truss core structure, mutually isostructural splicing can be carried out along the thickness direction of cellular construction 1.Then, in the fishing net
The first cover board 2 is arranged in the side of shape lattice structure, and the second cover board 3 is arranged in the opposite side of the first cover board 2, constitutes truss core knot
Structure.
It is appreciated that the connecting rod 11 of multiple lattice structures can also be spliced to form pyramid dot matrix structure, Kagome
Lattice structure, tetrahedron lattice structure etc..
Equally, it is set in the side of the lattice structures such as pyramid dot matrix structure, Kagome lattice structure, tetrahedron lattice structure
The first cover board 2 is set, second cover board 3 is set in the opposite side of the first cover board 2, also may make up corresponding truss core structure, such as
Pyramid lattice sandwich structure shown in Kagome lattice sandwich structure and Figure 22 c shown in Figure 22 b.
As shown in Figure 22 a~Figure 22 c, in three kinds of truss core structures, cellular construction 1 is in splicing with the first cover board
2 or second cover board 3 be horizontal plane, cellular construction 1 is in normal placement status, and the connecting rod 11 in cellular construction 1 is covered with first
Angle between plate 2 or the second cover board 3 is θ, 40 °≤θ≤50 °.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (16)
1. the cellular construction based on lattice structure, which is characterized in that the cellular construction include the first pedestal, the second pedestal, with
And the connecting rod of connection first pedestal and second pedestal；
Angle between the connecting rod and horizontal plane is set as θ, and 40 °≤θ≤50 °, in which:
The length of the connecting rod is L, and width of the connecting rod along the cross section perpendicular to vertical plane where its central axes is W, institute
Connecting rod is stated along cross section perpendicular to vertical plane where its central axes with a thickness of T, and T≤W, 0.1≤W/L≤0.15.
2. the cellular construction according to claim 1 based on lattice structure, which is characterized in that the link mechanism includes circle
One of column structure, prism structure.
3. the cellular construction according to claim 2 based on lattice structure, which is characterized in that the prism structure is tetragonous
Rod structure.
4. the cellular construction according to claim 1 based on lattice structure, which is characterized in that the connecting rod side is provided with
Reinforcement part, the reinforcement part are L along the length of the length of connecting rod extending direction1, along the cross section perpendicular to the vertical plane
Width be W1, wherein 0.05≤L1/ L≤0.15,1.1≤W1/W≤1.2。
5. the cellular construction according to claim 4 based on lattice structure, which is characterized in that the connecting rod is in close to first
The reinforcement part, the reinforcement part and neighbouring first pedestal or the second base are provided at the position of pedestal or the second pedestal
Seat is d along the distance between length direction of the connecting rod, wherein 0.1≤d/L≤0.3.
6. the cellular construction according to claim 5 based on lattice structure, which is characterized in that the quantity of the reinforcement part is
It is multiple, multiple reinforcement part interval settings.
7. the cellular construction according to claim 6 based on lattice structure, which is characterized in that the connecting rod is in close to first
The reinforcement part is each provided at the position of pedestal and the second pedestal.
8. the cellular construction according to claim 1 based on lattice structure, which is characterized in that first pedestal and/or
Second pedestal includes attachment base and the interconnecting piece for being convexly equipped in the attachment base, and the connecting rod intersects to the interconnecting piece.
9. the cellular construction according to claim 8 based on lattice structure, which is characterized in that the interconnecting piece includes being used for
The joint face of the connecting rod is connected, the connecting rod is perpendicular to the joint face.
10. the cellular construction according to claim 8 based on lattice structure, which is characterized in that the interconnecting piece is described in
The shape in the section of vertical plane includes one of part circular, triangle, trapezoidal.
11. the cellular construction according to claim 8 based on lattice structure, which is characterized in that the attachment base is provided with
Splicing construction, mutual split of the splicing construction between the different cellular constructions are fixed；And/or
The mutual split that the splicing construction is used for external agency is fixed.
12. the cellular construction according to claim 1 based on lattice structure, which is characterized in that the cellular construction is one
Body structure.
13. lattice structure, which is characterized in that the lattice structure is as multiple unit knots as described in any one of claim 1~13
Structure is spliced.
14. lattice structure according to claim 13, which is characterized in that the connecting rod of multiple lattice structures is spliced to form
At least one of pyramid dot matrix structure, Kagome lattice structure, tetrahedron lattice structure, fishing net shaped lattice structure.
15. lattice structure according to claim 14, which is characterized in that in the fishing net shaped lattice structure, cellular construction
Between crossed node position or the crossed node following position directly, be provided with reinforcing rod.
16. truss core structure, which is characterized in that the truss core structure includes the first cover board, with the first cover board phase
To the second cover board of setting, and be set between first cover board and second cover board such as claim 13~15 times
Lattice structure described in one.
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