CN206107338U - Bionical energy -absorbing box - Google Patents
Bionical energy -absorbing box Download PDFInfo
- Publication number
- CN206107338U CN206107338U CN201621129323.1U CN201621129323U CN206107338U CN 206107338 U CN206107338 U CN 206107338U CN 201621129323 U CN201621129323 U CN 201621129323U CN 206107338 U CN206107338 U CN 206107338U
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- energy
- connecting plate
- absorption box
- box body
- thin
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Abstract
The utility model discloses a bionical energy -absorbing box, including first connecting plate, box body and second connecting plate, first connecting plate and second connecting plate are fixed respectively at the both ends of box body, its characterized in that: the box body is constituteed by the the wall of grille of polygon grid unit and along the thin -walled column that grid wall intersection set up, thin -walled column and the wall of grille are prismatic wave form, at the deformation guide line of the wall of grille with intersection's formation wave form of thin -walled column. The utility model discloses the energy -absorbing box energy -absorbing of elaborateeing is big, the power consumption is stable, effective collision back speed of a motor vehicle that reduces, and the highest safe speed when further improving car crash safety is applicable to automobile part design especially and makes field or the similar structure that has the anticollision to require, can effectively ensure major structure and people's life safety.
Description
Technical field
This utility model be related to it is a kind of for colliding when absorb the energy-absorption box of impact, a kind of more particularly to vehicle energy absorption box.
Background technology
During collision scenario, particularly low speed collision when, to avoid front longitudinal from deforming, generally vehicle beam (insurance
Thick stick) energy-absorption box is installed and front longitudinal (automobile main frame) between.When collision occurs, what is contacted first is automobile front beam, its
Secondary is energy-absorption box, is finally front longitudinal.Bumper and energy-absorption box not only act as protection passenger and outside pedestrains safety,
Make extent of injury try one's best outside the effect for reducing, also function to make the effect of vehicle and the damaged condition reduction of other parts, so exist
After vehicle collision occurs, its maintenance cost can just be reduced.But the test result of the IIHS in the U.S. shows, most of configuration of automobiles
Bumper is far from enough shock-absorbing capacities to reach the purpose of maintenance cost reduction at present.Therefore energy-absorption box is except having foot
Outside enough intensity, the rigidity crashworthiness stronger to meet automobile, should also have suitable buffering energy-absorbing ability, be subtracted with this
The impulsive force produced during weak collision.When therefore colliding, determine that the critical component of its crashworthiness is bumper system for vehicles
The energy produced by collision is all absorbed by the energy absorbing component between front longitudinal, the good part of energy absorption characteristics, makes its of car body
Its structure avoids permanent deformation, so as to protect the vitals such as automobile front longitudinal beam, electromotor against damages, more ensures occupant
It is injury-free.When collision, automobile reaches certain speed, energy-absorption box can not fully absorb kinetic energy during car crass, residual energy
Amount is then undertaken by longeron, and now the agent structure of automobile will be damaged, or even threatens the safety of occupant.
But inventor yet suffers from problems with finding current technology：Existing traditional energy-absorption box is only tetragon square
Shape or single cylinder, its deformation guide line is also broken line, so as to difference makes full use of the plastic deformation of material to be consumed energy.
Therefore there is the shortcomings of shock-absorbing capacity is not enough, energy-absorbing stroke is longer.The protector master when automobile occurs low speed collision can only be ensured
Body structure and the safety of internal staff.When automobile occurs high speed to be collided, larger secondary collision injury can be produced, now
Energy-absorption box is played a part of very limited.
The content of the invention
Technical problem to be solved in the utility model is the deficiency existed for above-mentioned prior art, and provides one kind
The bionical energy-absorption box that energy-absorbing is big and power consumption is fast.
To solve above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of bionical energy-absorption box, the first connecting plate, box body and the second connecting plate, the first connecting plate and the second connecting plate point
The two ends of box body are not fixed on, it is characterised in that：The box body is by the grid wall of polygon grill unit and along cell walls
The thin-walled column composition that intersection is arranged, the thin-walled column and grid wall are prismatic waveform, in grid wall and thin-walled column
Intersection forms the deformation guide line of waveform.
The waveform is the composite wave of sine wave, cosine wave or sine wave and cosine wave, wherein when waveform is sine wave y
=Asinx or cosine wave y=Aconx or composite wave y=A (conx+sinx), its amplitude A are determined that by following formula wherein P is nothing
The maximum compression strength of box body during sine wave, F are maximum compression strength required when using, and x is box body along short transverse
Variable, dx are the differential to x：
Only sine wave when：
Only cosine wave when：
When sine wave is with cosine wave composite wave：
It is described be provided with sine wave or cosine wave deformation guide line box body can be by formed by integrally casting molding or machining mode
Formed.
The polygon grill unit is the polygon grids such as triangle, tetragon or hexagon.
The material selection steel of energy-absorption box, aluminium alloy or fibrous composite.
The grid wall two ends are connected with the first connecting plate and the second connecting plate respectively with thin-walled column two ends.
Box body quantity between the first connecting plate and the second connecting plate is equal to or more than one.
In this utility model energy-absorption box, thin-walled pillar-cell structure has outstanding deformation energy dissipation capacity.Compared to existing
Energy-absorption box, its deformation energy dissipation capacity are 5～7 times of existing energy-absorption box；Compared to being not provided with sine wave (or cosine wave and combinations thereof
Waveform) deformation guide line column structure, this utility model not only has that power consumption is stable, make full use of material plasticity deformability
The characteristics of, and the impact force peak value of car crass moment can be effectively reduced, it is reduced as far as the huge of impact moment generation
Large impact power threatens to the safety of occupant.Therefore the energy-absorption box can quickly absorb collision energy, and power consumption is stable, has
Effect reduces collision rift speed, further improves maximum safe speed during automobile safety collision, and emphasis is applied to auto parts and components
Manufacture and design field or the similar structure for having anticollision requirement, can effective guarantee agent structure and people life security.And according to
The requirement of different automobile types and collision peak value, can pass through to change sine wave (or cosine wave and combinations thereof waveform) deformation guide line
Amplitude changes the peak value of energy-absorption box impact force, and the size of impact force peak value also determines the power consumption energy of total to a certain extent
Power：Can not be excessive, occupant can be threatened safely；Can not be too small, energy dissipation capacity can be caused not enough.When waveform is for just
String ripple y=Asinx or cosine wave y=Aconx or composite wave y=A (conx+sinx), its amplitude A determined by following formula, wherein P
It is the maximum compression strength without box body during sine wave, F is maximum compression strength required when using, and x is along short transverse
Variable, dx are to carry out differential to x：
Only sine wave when：
Only cosine wave when：
When sine wave is with cosine wave composite wave：
Above formula is definite integral formula.
Description of the drawings
Fig. 1 is the bionical energy-absorption box schematic diagram of this utility model.
Fig. 2 is the bionical energy-absorption box side view of this utility model.
Energy-absorption box schematic cross-sections of the Fig. 3 for this utility model hexagon grill unit
Energy-absorption box schematic cross-sections of the Fig. 4 for this utility model tetragon grill unit.
Fig. 5 is this utility model energy-absorption box sectional dimension schematic diagram.
Fig. 6 is traditional energy-absorption box sectional dimension schematic diagram.
Fig. 7 is this utility model and traditional energy-absorption box impact kinetic energy curve.
Number in figure：1 is the first connecting plate；2 is box body；3 is the second connecting plate；4 are deformation guide line；5 is bolt hole,
6 is the energy-absorption box of hexagon grill unit；7 is thin-walled column, and 8 is grid wall, and 9 is the energy-absorption box of tetragon grill unit.
Specific embodiment
A kind of bionical energy-absorption box of this utility model, its schematic diagram and middle box body structure respectively as shown in Figure 1, Figure 2 with Fig. 3 institutes
Show.The bionical energy-absorption box, including the first connecting plate 1, box body 2 and the second connecting plate 3.Box body 2 is by polygon grill unit
Grid wall 8 and the thin-walled column 7 arranged along cell walls intersection are constituted, and thin-walled column and grid wall are prismatic waveform,
The contour line of waveform forms deformation guide line 4.First connecting plate 1 and the second connecting plate 3 are separately fixed at the two ends of box body 2, and
First connecting plate and the second connecting plate arrange link bolt hole 5, are connected with automobile longitudinal girder and bumper respectively.
Waveform can be sine wave or cosine wave and combinations thereof ripple, can be formed by formed by integrally casting molding or machining mode
(as shown in Figures 1 and 2).
Shock simulation is carried out to the bionical energy-absorption box (Fig. 5) that deformation is guided with sine wave using ABAQUS finite element softwares
As a example by analysis, and compared with existing conventional automobile tradition energy-absorption box (Fig. 6), illustrate bionical energy-absorption box and have power consumption steady
The characteristics of determining, make full use of material plasticity deformability.Bionical energy-absorption box (Fig. 5) and traditional energy-absorbing used by numerical simulation analysis
Two side connecting plate thickness 2mm of box (Fig. 6), box body height 60mm, sectional dimension distinguish as shown in Figure 5 and Figure 6, and two kinds of different suctions
The box body sectional area of energy box is identical, i.e., volume is identical, therefore has more comparability.Wherein bionical energy-absorption box uses sine wave
Guiding hook, and traditional energy-absorption box then deforms groove using broken line.Two kinds of energy-absorbing BOX Models adopt material for aluminium alloy, adopt
S4R units split grid, and overall cell number is about 30000, and energy-absorption box is with the velocity shock rigid plate of 70KM/h, collision time
0.01s。
Fig. 7 is the two impact kinetic energy versus time curve.From the kinetic energy curve, 1) the bionical suction of this utility model
Energy box just absorbs whole kinetic energy within the time less than 0.01s；And traditional energy-absorption box only absorbs initial kinetic energy in 0.01s
About half.It means that when a vehicle is in a collision, traditional energy-absorption box can not absorb whole kinetic energy before disabling, then touch
Hit and eventually undertaken and dissipating residual kinetic energy by vehicle frame (i.e. automobile main frame), produce secondary collision injury.Due to secondary collision
The impulsive force of generation is directly undertaken by vehicle frame, causes which to deform, the serious safety for threatening occupant；2) when collision time is
During 0.002s, the speed of traditional energy-absorption box is 57.2KM/h, and bionical energy-absorption box speed this moment is 24.7KM/h.In collision just
Phase (0～0.002s), bionical energy-absorption box can reduce rapidly the kinetic energy of whole system, reduce impact velocity, decrease by 64%.Meaning
Even if taste generation high velocity impact, bionical energy-absorption box can effectively reduce the speed of collision rift, so as to secondary collision is greatly decreased
To the injury that vehicle and occupant bring.
In sum, guide the bionical energy-absorption box of deformation that there is higher deformation energy dissipation capacity with sine wave, in short-term
Between can effectively reduce the collision rift speed of automobile when colliding.Existing frequently-used vehicle energy absorption box is usually low speed energy-absorption box, that is, pacify
Full speed degree is 35～45KM/h, and the safety criterion in Europe is 50KM/h.And bionical energy-absorption box can be by safety speed through optimization expection
Degree is promoted to 70～80KM/h, and the life security of degree and occupant is damaged so as to effectively reduce vehicle during traffic accident.According to
The Chinese authority's statistical report, 2010, there is road traffic accident 238351 in the whole nation altogether, cause 67759 people it is dead, 275125
People is injured.The traffic accident for producing serious casualties every time, which is that speed is too fast at all, fails brake in time.Using bionical energy-absorption box
Automotive safety speed be 70～80KM/h, it is meant that urban inner occur head-on crash traffic accident when, can basic guarantee car
Interior personal security.On China's highway, speed is generally 100～120KM/h.The normal reaction of human pilot is typically based on, is met
Can all touch on the brake to emergency.Only because upper speed is too fast at a high speed, it is impossible to which speed is down to the safety speed of existing energy-absorption box
Degree, i.e., within 50KM/h, thus result in casualties.When using bionical energy-absorption box, only speed need to be down to 70～80KM/h
Within, it is possible to ensure the safety of occupant.This is greatly reduced the casualty rate of personnel when vehicle accident occurs, great to answer
With value.Except automotive field, the higher field of Aero-Space, ship buffering mechanical property requirements is more suitable for.So which should
It is extremely extensive with scope, it is a significant innovation to buffering energy-consumption structure.
This utility model polygonal gird structure is not limited to the sandwich of square, and this lattice structure can also
It is equilateral triangle, hexagonal structure.The shape of thin-walled column can be circular or polygon.
A kind of multi-functional buffering sandwich plate of 1 high-strength light of embodiment
The structure is except by upper lower plate, and the composition of the grid layer containing thin-walled column is outer, clogs expansion type in the cavities
Padded coaming is further enhancing shock-absorbing capacity.
A kind of 2 high-strength light interlayer curved slab of embodiment
The structure is still by upper lower plate, and the composition of the grid layer containing thin-walled column, but when making, by adjusting mould
Tool, realizes that plate face becomes bent by flat, strengthens the scope of application of sheet material.
Claims (7)
1. a kind of bionical energy-absorption box, including the first connecting plate, box body and the second connecting plate, the first connecting plate and the second connecting plate
It is separately fixed at the two ends of box body, it is characterised in that：The box body is by the grid wall of polygon grill unit and along grid
The thin-walled column composition that wall intersection is arranged, the thin-walled column and grid wall are prismatic waveform, in grid wall and thin-walled column
Intersection forms the deformation guide line of waveform.
2. bionical energy-absorption box according to claim 1, it is characterised in that：The deformation guide line waveform is sine wave y=
Asinx or cosine wave y=Aconx or composite wave y=A (conx+sinx), its amplitude A are determined that by following formula wherein P is without just
The maximum compression strength of box body during string ripple, F are maximum compression strength required when using, and x is change of the box body along short transverse
Amount, dx is the differential to x：
Only sine wave when：
Only cosine wave when：
When sine wave is with cosine wave composite wave：
3. bionical energy-absorption box according to claim 2, it is characterised in that：It is described be provided with sine wave or cosine wave deformation draw
The box body of wire can be formed by formed by integrally casting molding or machining mode.
4. bionical energy-absorption box according to claim 2, it is characterised in that：The polygon grill unit be triangle, four
The polygon grid such as side shape or hexagon.
5. bionical energy-absorption box according to claim 3, it is characterised in that：The material selection steel of energy-absorption box, aluminium alloy or fibre
Dimension composite.
6. bionical energy-absorption box according to claim 4, it is characterised in that：Distinguish with thin-walled column two ends at the grid wall two ends
It is connected with the first connecting plate and the second connecting plate.
7. bionical energy-absorption box according to claim 1, it is characterised in that：Between the first connecting plate and the second connecting plate
Box body quantity be equal to or more than one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129323.1U CN206107338U (en) | 2016-10-17 | 2016-10-17 | Bionical energy -absorbing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129323.1U CN206107338U (en) | 2016-10-17 | 2016-10-17 | Bionical energy -absorbing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206107338U true CN206107338U (en) | 2017-04-19 |
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ID=58529588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621129323.1U Expired - Fee Related CN206107338U (en) | 2016-10-17 | 2016-10-17 | Bionical energy -absorbing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206107338U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347463A (en) * | 2016-10-17 | 2017-01-25 | 东南大学 | Bionic energy absorption box |
| CN109094499A (en) * | 2018-10-12 | 2018-12-28 | 华侨大学 | A kind of new automobile energy-absorbing box device of the more material mixing of multi-section |
| CN109473584A (en) * | 2018-11-19 | 2019-03-15 | 苏州银禧新能源复合材料有限公司 | Battery box cover and its moulding process |
| CN115289161A (en) * | 2022-10-08 | 2022-11-04 | 吉林大学 | Novel bionic energy absorption tube structure based on beetle coleoptera characteristics |
-
2016
- 2016-10-17 CN CN201621129323.1U patent/CN206107338U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347463A (en) * | 2016-10-17 | 2017-01-25 | 东南大学 | Bionic energy absorption box |
| CN109094499A (en) * | 2018-10-12 | 2018-12-28 | 华侨大学 | A kind of new automobile energy-absorbing box device of the more material mixing of multi-section |
| CN109094499B (en) * | 2018-10-12 | 2024-02-27 | 华侨大学 | Multi-section multi-material mixed automobile energy absorption box device |
| CN109473584A (en) * | 2018-11-19 | 2019-03-15 | 苏州银禧新能源复合材料有限公司 | Battery box cover and its moulding process |
| CN115289161A (en) * | 2022-10-08 | 2022-11-04 | 吉林大学 | Novel bionic energy absorption tube structure based on beetle coleoptera characteristics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20211017 |