CN207029086U - A kind of crash energy absorption equipment with negative poisson's ratio characteristic - Google Patents
A kind of crash energy absorption equipment with negative poisson's ratio characteristic Download PDFInfo
- Publication number
- CN207029086U CN207029086U CN201720632309.1U CN201720632309U CN207029086U CN 207029086 U CN207029086 U CN 207029086U CN 201720632309 U CN201720632309 U CN 201720632309U CN 207029086 U CN207029086 U CN 207029086U
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- energy absorption
- cellular material
- absorption equipment
- negative poisson
- body unit
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Abstract
The utility model discloses a kind of crash energy absorption equipment with negative poisson's ratio characteristic, including a body unit, two support bases, an elastomer and at least two cellular material units.The bodys and one that the body unit includes being socketed inside and outside two are located at the energy-absorbing material portion between two body.Two support base is respectively and fixedly connected to body unit two-port.The elastomer is in the body positioned at inner side of body unit and both ends contact can act on two support bases respectively.The cellular material unit includes arc and cellular material portion, the arc both ends be respectively and fixedly connected to two support bases and arc opening outwardly, the cellular material portion be installed in arc back and the body unit between the tube wall in outside.It has the following advantages that：The multi-direction multistage segments combined absorption energy of energy, can make full use of material and space, effectively reduce instantaneous impact force, and energy absorbing efficiency is high.
Description
Technical field
It the utility model is related to a kind of crash energy absorption equipment, more particularly to a kind of progressive combined height of negative poisson's ratio characteristic
Imitate crash energy absorption equipment.
Background technology
It is related to crash energy absorption equipment that material and structural energy absorb before multiple fields have important application, such as automobile
The buffering energy-absorbing used in the buffering energy-absorbing box of back buffer beam, the crash energy absorption equipment of lift car bottom and some other fields
Anticollision mechanism etc..For the high engineer equipment of security requirement, its passive safety after reload buffer energy absorption device obtains for some
Improve, reduce instantaneous impact force when collision accident occurs, huge energy caused by collision is absorbed, so as to reducing
The casualty rate of user is equipped, effectively prevent secondary injury etc..But existing most of crash energy absorption equipment energy-absorbing forms
Single, energy absorbing efficiency is low, and energy-absorbing effect is poor, and stock utilization is low, and light weight degree is not high.
Utility model content
The utility model provides the progressive combined high-efficiency crash energy absorption equipment of negative poisson's ratio characteristic, which overcomes background
Deficiency in technology present in crash energy absorption equipment.
The used technical scheme that the utility model solves its technical problem is：
A kind of crash energy absorption equipment with negative poisson's ratio characteristic, including：
One body unit (10), the bodys (11) and one that it includes being socketed inside and outside two are located at the suction between two body (11)
Can material portion (12)；
Two support bases (20), two support base (20) are respectively and fixedly connected to body unit (10) two-port；
One elastomer (30), it is in the body (11) positioned at inner side of body unit (10) and both ends can distinguish contact
Act on two support bases (20)；And
At least two cellular material units (40), the cellular material unit (40) include arc (41) and cellular material portion
(42), arc (41) both ends be respectively and fixedly connected to two support bases (20) and arc opening outwardly, the cellular material portion (42) is solid
It is located between arc (41) back side and body (11) outer wall positioned at outside of the body unit (10).
Among one embodiment：Two body (11) is all pipe and coaxially arranged.
Among one embodiment：The body (11), the material of support base (20) all select aluminium alloy.
Among one embodiment：The energy-absorbing material portion (12) selects foamed material, and the foamed material is fixed on two bodys (11)
Between.
Among one embodiment：The foamed material selects aluminum foam.
Among one embodiment：Also include two support tubes in the body (11) positioned at inner side of body unit (10)
(31), two support tubes (31) one end is respectively and fixedly connected to the practising physiognomy to face of two support bases (20), and support tube (31) other end is solid
Top plate (32) is connected to, contact abuts against two top plate (32) respectively at elastomer (30) both ends.
Among one embodiment：The honeycomb in the cellular material portion (42) is that polygon is cellular, every during the polygon is cellular
While thickness by it is per while middle part to every side end portion progressive additive.
Among one embodiment：Cellular material unit (40) number is at least three, at least three cellular materials unit
(40) array is arranged in outside body unit (10).
Among one embodiment：The cellular material portion (42) of the cellular material unit (40) and being located at for body unit (10)
Body (11) outer wall in outside coincide affixed, and the cellular material portion (42) and arc (41) back side coincide affixed.
Among one embodiment：The arc (41) is made up of rectangle stainless steel plate of rolling, the cellular material portion (42)
Honeycomb room hole vertical tube unit (10) axis.
Compared with background technology, it has the following advantages that the technical program：
High efficiency buffer energy absorption device, the multi-direction multistage segments combined absorption energy of energy, can make full use of material and space, have
Effect reduces instantaneous impact force, and energy absorbing efficiency is high.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the dimensional structure diagram of crash energy absorption equipment.
Fig. 2 is the diagrammatic cross-section of crash energy absorption equipment.
Fig. 3 is the internal structure schematic diagram of crash energy absorption equipment.
Fig. 4 is the dimensional structure diagram of body unit.
Fig. 5 is the dimensional structure diagram in cellular material portion.
Fig. 6 is partial structural diagram at Fig. 5 A.
Embodiment
It refer to Fig. 1 to Fig. 6, a kind of crash energy absorption equipment with negative poisson's ratio characteristic, including a body unit 10, two
Support base 20, an elastomer 30 and at least two cellular material units 40, the support base 20 is as selected rigid plate.The present embodiment device
When in use, support base 20 is preferably made vertically to collide source, when the crash energy absorption equipment receives impact load, the support
Seat 20 can play a part of decomposing uniform load in each endergonic structure.
The body unit 10 includes the energy-absorbing material portion that the two inside and outside bodys 11 and one being socketed are located between two body 11
12；Two support base 20 is respectively and fixedly connected to the two-port of body unit 10, is such as realized by welding manner affixed.The present embodiment it
In：Two body 11 is all pipe and coaxially arranged, supporting surface (two supports of the axis of the body unit 10 also vertical support seat 20
Seat 20 is practised physiognomy to face)；The material selection aluminium alloy of body 11, the energy-absorbing material portion 12 select foamed material, as low density aluminum is steeped
Foam, after the foamed aluminium adds additive such as in pure aluminum or aluminum alloy, formed by foam process, it is gentle that it has metal concurrently simultaneously
Steep feature.The foamed material is fixed between two bodys 11, such as by binding agent by foamed material be glued be fixed on two bodys it
Between, the binding agent such as epoxy resin.Among the utility model, using the structure of above-mentioned similar sandwich by two bodys 11 and energy-absorbing
Material portion 12 combines, and the material selection aluminium alloy of body 11, energy-absorbing material portion 12 select foamed material, then except fully sending out
Wave body 11 stable crumple energy-absorbing effect and energy-absorbing material portion height than energy-absorbing and lightweight outside, also pass through both interactions
Effect produces more superior energy absorbing efficiency while it is combined both advantages when crumple deformation occurs.
The elastomer 30 is in the body 11 positioned at inner side of body unit 10 and both ends contact can act on two respectively
Support base 20.Among the present embodiment, in addition to two positioned at body unit 10 the body 11 positioned at inner side in support tube 31, this
The one end of two support tube 31 is respectively and fixedly connected to the practising physiognomy to face of two support bases 20, and the other end of support tube 31 is connected with top plate 32, should
Contact abuts against two top plate 32 to the both ends of elastomer 30 respectively.Among concrete structure：The top plate 32 and support tube 31 are by aluminium
Alloy material is made；The elastomer 30 is spring, and the terminal surface of top plate 32 is recessed fluted, and the end of elastomer 30 passes through interference
The groove of fit system insertion top plate 32 realizes connection；The support tube 31 is hollow circular-tube, and the support tube 31 passes through welding manner
Fixed supporting seat 20 and top plate 32；The spring, hollow circular-tube, body unit 10 are coaxially arranged, the 2 rounded structure of top plate, and
Circular and hollow circular-tube is coaxially arranged.The component that the elastomer 30, top plate 32 and support tube 31 are formed fills for the buffering energy-absorbing
Put and produce main progressive energy-absorbing effect, when the device is collided and loads lotus and produce axial crumple deformation, elastomer 30 is pressed
Compression deformation, axial load start to load, and support tube 31 is transferred loads to by top plate 32, when the compression displacement of elastomer 30 is enough
Greatly, when producing larger elastic reactance and the elastic deformation bearing capacity more than support tube 31, the support tube 31 of both sides will
Generation plasticity crumple deformation carries out energy absorption.The top plate 32 and support tube 31 are made by aluminum alloy materials, are more also easy to produce
Stable plastic deformation, and tear failure is not likely to produce, energy absorbing efficiency is high.
The cellular material unit 40 includes arc 41 and cellular material portion 42, and the both ends of arc 41 are respectively and fixedly connected with two
Support seat 20 practise physiognomy on face and arc opening outwardly, the axis of the arc 41 be located at the plane of symmetry (two support bases 20 it is relative this
The plane of symmetry is axially symmetric, and the plane of symmetry vertical tube unit 10) on；The cellular material portion 42 be installed in the back side of arc 41 and
Between the outer wall of body 11 positioned at outside of the body unit 10.Among the present embodiment：40 numbers of the cellular material unit is extremely
Few three, the array of at least three cellular materials unit 40 is arranged in outside body unit 10, is 4 in figure；The arc 41
It is made up of rectangle stainless steel plate of rolling, the arc both ends are fixed in two support bases by welding manner respectively；The honeycomb
The honeycomb in material portion 42 is that polygon is cellular, such as regular hexagon, during the polygon is cellular per while thickness by it is per while middle part
To every side end portion (junction of adjacent edge, i.e., at the angle of cut) progressive additive, such as the t1 in figure to t2；The honeybee in the cellular material portion 42
The axis of nest room hole vertical tube unit 10, as honeycomb room hole 43 is horizontally disposed in figure；The cellular material portion 42 and the body list
The outer wall of body 11 positioned at outside of member 10 coincide it is affixed, the cellular material portion 42 and the back side of arc 41 coincide it is affixed, this
It is affixed that realization, the binding agent such as epoxy resin are such as bonded by binding agent.In concrete structure, the both ends of the surface in the cellular material portion 42
The cambered surface at the back side of the outer wall that anastomotic vessel body unit is made and arc is respectively cut, is such as made up of Wire EDM.When
For the crash energy absorption equipment when crumple deformation occurs for carrying impact force, arc will produce flexural deformation to inner side, squeeze simultaneously
Cellular material portion 42 is pressed, cellular material portion 42 is produced crumple and carries out energy absorption so that the crash energy absorption equipment is touched receiving
During pressure contracting produce overall shrinkage negative poisson's ratio effect, reduce outside space intrusion rates, reduce to other components with
And the influence of environment, it also avoid secondary injury while its buffering energy-absorbing effect is given full play to.Moreover, the cellular material portion
42 every side suffers from the feature of thickness change, and end thickness is maximum, and thickness is gradually decrease to each side with linear gradient change
Midline position reach thickness minimum value so that bearing capacity and to produce the maximum position thickness of plastic deformation also maximum, abundant
Play and also achieve the lightweight of product and higher stock utilization outside the superior cushion energy absorbing property of cellular material.
In one specific product, such as the product among accompanying drawing：The height 230mm of the crash energy absorption equipment, diameter 185mm；Should
Support base is aluminium alloy circular slab, diameter 185mm, thickness 5mm；The wire diameter 5mm of the elastomer 30 is high under free state
Spend 100mm；The top plate 32 thickness 10mm, groove depth 5mm, diameter 50mm；The height 60mm of the support tube 32, diameter 40mm, wall
Thick 2mm；The thickness of two bodys in the body unit 10 is 2mm, is highly 220mm, and the density in energy-absorbing material portion 12 is
0.3g/cm3, and body and after energy-absorbing material portion is glued by epoxy adhesive when processing, after static solidification 24 hours again
With both ends support base 20 by being welded to connect；The total height 220mm in the cellular material portion 42 of the cellular material unit 40, width
60mm, thickness t2=0.5mm therein, thickness t1=1mm, the thickness of arc 41 are 2 millimeters, bending radius 312mm.
The progressive combined crash energy absorption equipment of negative poisson's ratio formula involved by the utility model fills for individual buffer energy-absorbing
Put, do not limited by other devices or mechanism, can be fixed in when in use individually or in the form of multigroup need into
The position of row buffering energy-absorbing.Crash energy absorption equipment involved by the utility model when in use by both ends of the surface it is any one facing to
Collide source, such as when apply it to be used as power-absorbing in vehicle safety field when, should by its normal line of butt end sensing car
Traveling front, with maximize play the device buffering energy-absorbing effect.
The crash energy absorption equipment of the present embodiment has the following advantages that：
1st, energy-absorbing is various informative, efficient energy-absorbing effect.The utility model provides progressive group of a kind of negative poisson's ratio formula
Mould assembly high efficiency buffer energy absorption device, wherein a variety of energy-absorbing forms are combined with, including body unit (sandwich pipe) itself is had
Efficient energy absorption capability, middle elastomer presses to energy absorption caused by the support tube crumple at both ends, and the dress
Put the cellular material portion 42 of the surrounding energy absorption capability caused by extruded by arc.When crash energy absorption equipment by
During impact load, multiple kinds of energy absorption pattern both with itself institute can be carried out by multi-form in the same time, by energy
Absorption efficiency performs to maximization, most fast by plastic deformation caused by various forms of the impact kinetic energy resolution in material, incites somebody to action
Injury is preferably minimized.
2. bigger than energy-absorbing, light weight effect is obvious.The cellular material portion 42 employs thickness design, reduces material use
The thickness of rate lower position, light-weighted realization is also beneficial on the premise of itself energy absorption capability is not reduced.Except this
Outside, provided with least two cellular material units, substantial amounts of energy can be absorbed, and the quality of materials is small, therefore the material of unit mass
Energy absorption capability is very high.The energy-absorbing material portion of body unit is using low density foam, and body is using aluminium alloy
Material, both quality are small, and energy absorption capability is strong, and are inhaled by reciprocation caused by body and energy-absorbing material portion, its energy
Receipts ability is strengthened, therefore body unit is integrally bigger than energy-absorbing, and contributes to light-weighted realization.It is worthy of note that this reality
Contribute to the engineer equipment for loading the present apparatus to reduce energy unnecessary on kinetic energy with new realized product lightweight to disappear
Consumption, is advantageous to energy-saving and emission-reduction.
3. buffering energy-absorbing is stable, crash-worthiness is high.Progressive combined buffering energy-absorbing form buffering involved by the utility model
Positive effect, energy-absorbing is stable, although the elastomer of first stage stores the power stage and energy absorption can not occur, helps to reduce and rushes
Amount, contribute to huge collision initial spike power caused by the generation of reduction accident, be favorably improved power-absorbing in energy absorption
When buffer capacity, and crash-worthiness is high, reduces the injury to equipping user.
4. negative poisson's ratio crumple deforms, space invasion amount is small.The utility model provides a kind of negative poisson's ratio formula deformation
Crash energy absorption equipment, when the device produces conquassation alternating compression in the power that is collided, will not expand can produce receipts on the contrary
Contracting, space invasion amount is small, reduces the influence to other components and will not take substantial amounts of space so that when collision accident occurs
When the useful space it is more, also simultaneously avoid secondary injury.
5. processing is prepared simply, sustainability is strong.Arc involved by the utility model can be directly by quadrangle not
Rust steel plate is made up of specific arc rolling, and fracture failure, cellular material portion and pipe are not susceptible to when by flexural deformation
Body, support tube etc. can all be produced by the plain mode of Wire EDM, are glued by epoxy adhesive and welded
Form also be very easy to realize.So ensureing that its is functional simultaneously, the device avoids the processing of complexity on the whole
Technique, prepare simply, and be not easy to be corroded by rainwater air, sustainability is strong using ability.
It is described above, only the utility model preferred embodiment, therefore the utility model implementation can not be limited according to this
Scope, i.e., the equivalent changes and modifications made according to the utility model patent scope and description, it is new all should still to belong to this practicality
In the range of type covers.
Claims (10)
- A kind of 1. crash energy absorption equipment with negative poisson's ratio characteristic, it is characterised in that：Including：One body unit (10), the bodys (11) and one that it includes being socketed inside and outside two are located at the energy-absorbing material between two body (11) Material portion (12)；Two support bases (20), two support base (20) are respectively and fixedly connected to body unit (10) two-port；One elastomer (30), it is in the body (11) positioned at inner side of body unit (10) and both ends can distinguish contact effect In two support bases (20)；AndAt least two cellular material units (40), the cellular material unit (40) include arc (41) and cellular material portion (42), Arc (41) both ends be respectively and fixedly connected to two support bases (20) and arc opening outwardly, the cellular material portion (42) is installed in arc Between shape plate (41) back side and body (11) outer wall positioned at outside of the body unit (10).
- A kind of 2. crash energy absorption equipment with negative poisson's ratio characteristic according to claim 1, it is characterised in that：Two pipe Body (11) is all pipe and coaxially arranged.
- A kind of 3. crash energy absorption equipment with negative poisson's ratio characteristic according to claim 1, it is characterised in that：The body (11), the material of support base (20) all selects aluminium alloy.
- A kind of 4. crash energy absorption equipment with negative poisson's ratio characteristic according to claim 1, it is characterised in that：The energy-absorbing Material portion (12) selects foamed material, and the foamed material is fixed between two bodys (11).
- A kind of 5. crash energy absorption equipment with negative poisson's ratio characteristic according to claim 4, it is characterised in that：The foam Material selection aluminum foam.
- 6. a kind of crash energy absorption equipment with negative poisson's ratio characteristic according to claim 1 or 2 or 3 or 4 or 5, it is special Sign is：Also include two support tubes (31) in the body (11) positioned at inner side of body unit (10), two support tube (31) one end is respectively and fixedly connected to the practising physiognomy to face of two support bases (20), and support tube (31) other end is connected with top plate (32), should Contact abuts against two top plate (32) respectively at elastomer (30) both ends.
- 7. a kind of crash energy absorption equipment with negative poisson's ratio characteristic according to claim 1 or 2 or 3 or 4 or 5, it is special Sign is：The honeycomb in the cellular material portion (42) be polygon it is cellular, during the polygon is cellular per while thickness by it is per while Middle part to every side end portion progressive additive.
- 8. a kind of crash energy absorption equipment with negative poisson's ratio characteristic according to claim 1 or 2 or 3 or 4 or 5, it is special Sign is：Cellular material unit (40) number is at least three, and at least three cellular materials unit (40) array is arranged in Outside body unit (10).
- 9. a kind of crash energy absorption equipment with negative poisson's ratio characteristic according to claim 1 or 2 or 3 or 4 or 5, it is special Sign is：The cellular material portion (42) of the cellular material unit (40) and the body (11) positioned at outside of the body unit (10) Outer wall coincide affixed, and the cellular material portion (42) and arc (41) back side coincide affixed.
- 10. a kind of crash energy absorption equipment with negative poisson's ratio characteristic according to claim 1 or 2 or 3 or 4 or 5, it is special Sign is：The arc (41) is made up of rectangle stainless steel plate of rolling, and the honeycomb room hole in the cellular material portion (42) is vertical The axis of body unit (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720632309.1U CN207029086U (en) | 2017-06-02 | 2017-06-02 | A kind of crash energy absorption equipment with negative poisson's ratio characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720632309.1U CN207029086U (en) | 2017-06-02 | 2017-06-02 | A kind of crash energy absorption equipment with negative poisson's ratio characteristic |
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| Publication Number | Publication Date |
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| CN207029086U true CN207029086U (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720632309.1U Withdrawn - After Issue CN207029086U (en) | 2017-06-02 | 2017-06-02 | A kind of crash energy absorption equipment with negative poisson's ratio characteristic |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107139874A (en) * | 2017-06-02 | 2017-09-08 | 华侨大学 | Crash energy absorption equipment with negative poisson's ratio characteristic |
| CN108944987A (en) * | 2018-08-06 | 2018-12-07 | 吉林大学 | A kind of expansion tube of trolley coach hitch conquassation deformation tube |
| CN109466486A (en) * | 2018-11-28 | 2019-03-15 | 华侨大学 | A kind of sandwich level energy absorption device |
| CN111017270A (en) * | 2019-12-20 | 2020-04-17 | 北京空间机电研究所 | Non-positive poisson ratio buffering energy-absorbing structure filled with round pipe |
-
2017
- 2017-06-02 CN CN201720632309.1U patent/CN207029086U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107139874A (en) * | 2017-06-02 | 2017-09-08 | 华侨大学 | Crash energy absorption equipment with negative poisson's ratio characteristic |
| CN107139874B (en) * | 2017-06-02 | 2023-06-20 | 华侨大学 | Buffering energy-absorbing device with negative poisson ratio characteristic |
| CN108944987A (en) * | 2018-08-06 | 2018-12-07 | 吉林大学 | A kind of expansion tube of trolley coach hitch conquassation deformation tube |
| CN109466486A (en) * | 2018-11-28 | 2019-03-15 | 华侨大学 | A kind of sandwich level energy absorption device |
| CN109466486B (en) * | 2018-11-28 | 2022-03-04 | 华侨大学 | Sandwich level energy-absorbing device |
| CN111017270A (en) * | 2019-12-20 | 2020-04-17 | 北京空间机电研究所 | Non-positive poisson ratio buffering energy-absorbing structure filled with round pipe |
| CN111017270B (en) * | 2019-12-20 | 2021-12-07 | 北京空间机电研究所 | Non-positive poisson ratio buffering energy-absorbing structure filled with round pipe |
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Granted publication date: 20180223 Effective date of abandoning: 20230620 |