CN104691467A - Composite energy absorption device for collision and application - Google Patents
Composite energy absorption device for collision and application Download PDFInfo
- Publication number
- CN104691467A CN104691467A CN201510004543.5A CN201510004543A CN104691467A CN 104691467 A CN104691467 A CN 104691467A CN 201510004543 A CN201510004543 A CN 201510004543A CN 104691467 A CN104691467 A CN 104691467A
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- Prior art keywords
- fiber layer
- carbon fiber
- collision
- energy
- angle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/22—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly cellular material, e.g. solid foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/023—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R2019/026—Buffers, i.e. bumpers of limited extent
Abstract
The invention provides a composite energy absorption device for collision. The composite energy absorption device comprises an extruding part and a bursting part, wherein an accommodating cavity and fiber layers stacked on the side wall of the accommodating cavity are arranged in the bursting part; the accommodating cavity is filled with an energy absorption material; the fiber layers is divided into a silk fiber layer arranged on the inner layer and multiple carbon fiber layers stacked on the outer side of the silk fiber layer; the fiber arrangement angles in the carbon fiber layers are different; the extruding part comprises an extruding rod and an extruding plate; the extruding rod and the accommodating cavity are in interference fit, when the extending rod receives external force, one end of the extruding rod extends into the accommodating cavity and extrudes the energy absorption material, and the other end of the extruding rod is connected with the extruding plate.
Description
Technical field
The present invention relates to a kind of energy absorption device, particularly relate to a kind of integrated use longitudinal compression energy-absorbing, transverse shear stress energy-absorbing, spalling energy-absorbing and tear the collision composite endergonic device of energy-absorbing.
Background technology
Along with the frequent generation of traffic accident, the crash survivability of automobile is more and more subject to people's attention, and good energy absorption device can protect the safety of occupant in automobile collision accident, saves the life of people, alleviates the extent of injury of people in accident.Therefore, the designing technique of vehicle body endergonic structure has become the gordian technique of current vehicle safety design.
At present, the endergonic structure of most of auto body is still and is made up of thin-wall pipe, when colliding, mainly still adopts traditional energy-absorbing mode---compressive deformation energy-absorbing.But compressive deformation pattern energy-absorbing mode is comparatively single, often make energy impact load fluctuation in absorption process comparatively large, cause that endergonic structure energy-absorbing is insufficient, energy absorbing efficiency is low, and adaptation condition scope is also narrower.Therefore, conventional compression energy-absorbing mode can not meet the requirement of vehicle safety to endergonic structure, develops a kind of endergonic structure with novel energy-absorbing form particularly important.
Summary of the invention
Technical problem underlying to be solved by this invention overcomes the single defect of conventional compression energy absorption device energy-absorbing mode, and it is simple that appropriate design goes out structure, can the novel energy absorption device of stability and high efficiency energy-absorbing,
Secondary technical matters to be solved by this invention is the existing enough intensity of this device of requirement and toughness, can bear again the collision of some strength, to protect the safety of occupant.
In order to solve above-mentioned technical matters, a kind of collision composite endergonic device provided by the present invention, comprises press section and spalling portion; In described spalling portion, there is a containing cavity, and the stacked fibrage being arranged at described containing cavity sidewall; The inside of described containing cavity is filled with energy-absorbing material; Described fibrage is divided into the silk fiber layer and the stacked a plurality of carbon fiber layers be arranged at outside described silk fiber layer that are arranged at internal layer; Fibre array angle in described carbon fiber layer is not identical;
Described press section comprises pressure ram and stripper plate; Described pressure ram and described containing cavity are interference fit, and when being subject to External Force Acting, one end of described pressure ram is stretched in described containing cavity, extrudes described energy-absorbing material; The other end of described pressure ram connects stripper plate.
In a preferred embodiment: described carbon fiber layer is divided into stacked setting from outside to inside and has the first carbon fiber layer of same thickness, the second carbon fiber layer and the 3rd carbon fiber layer.
In a preferred embodiment: the fibre array angle in described first carbon fiber layer and the angle of vertical direction are 45 °; Fibre array angle in second carbon fiber layer and the angle of vertical direction are 0 °; Fibre array angle in 3rd carbon fiber layer and the angle of vertical direction are-45 °; Fibre array angle in silk fiber layer and the angle of vertical direction are 0 °.
In a preferred embodiment: the material of described carbon fiber layer is carbon fibre reinforced composite.
In a preferred embodiment: the gap between described silk fiber layer and the 3rd carbon fiber layer with 7-10mm.
In a preferred embodiment: described first fibrage, between the second fibrage and the 3rd fibrage, adopt the powerful Wear Characteristics of Epoxy Adhesive of SL3334 to connect.
In a preferred embodiment: described energy-absorbing material is foamed aluminium; Described foamed aluminium and containing cavity are in transition fit.
In a preferred embodiment: described pressure ram and stripper plate adopt entity structure, and through the carbon fibre reinforced composite of densification.
In a preferred embodiment: described fibrolaminar cross-sectional plane is rectangle.
Present invention also offers a kind of by the above-mentioned purposes of collision composite endergonic application of installation in the vehicle.
Compared to prior art, the invention has the beneficial effects as follows:
1. one collision composite endergonic device provided by the invention, when energy absorption device is collided, first, foamed aluminium is squeezed the longitudinal compression of bar, and longitudinal compression energy-absorbing occurs; Then foamed aluminium is because lateral expansion affords the transverse shear stress of whole device wall, and transverse shear stress energy-absorbing occurs.Subsequently, the surrounding of silk fiber housing is squeezed the extruding of bar and spalling, and spalling energy-absorbing occurs; The surrounding of first, second and third layer of carbon fiber shell is compressed the conquassation of plate and tears, and tears energy-absorbing; Finally, along with the fibrage of whole device compresses, whole device is gathered because of being compressed, thus enhances the intensity of whole device, protects the safety of passenger with this.Fully be compounded with multiple energy-absorbing mode, improve the energy absorbing efficiency of energy absorption device, ensure that the abundant absorption of energy.
2. collide composite endergonic device and have employed composite structure, the impulsive force reasonable distribution that device is subject to, alleviates the local pressure of material.
3. collide composite endergonic device and adopt housing structure, there is structure simple, the advantages such as intensity is high, good stability, and energy-absorbing effect is good.
4. collide composite endergonic device and adopt carbon fibre reinforced composite (CFRP) and silk, while the intensity improving whole device and energy absorption efficiency, also meet the theory of environmental protection, can not to environment.
5. collide composite endergonic application of installation scope wide, can be used for various needs on the device of energy-absorbing, and stable performance, be not affected by the external environment.
6. collide composite endergonic device in hollow structure, inserted foamed aluminium, reduce the vibrations produced in collision process, make impulsive force be tending towards relaxing, enhance the energy-absorbing stability of this device simultaneously.
Accompanying drawing explanation
Fig. 1 is the sectional structure chart colliding composite endergonic device in the preferred embodiment of the present invention;
Fig. 2 is fibrolaminar cross sectional representation in the preferred embodiment of the present invention.
Fig. 3 is the position view in press section and spalling portion before collision in the preferred embodiment of the present invention;
Fig. 4 is the position view in collision rift press section and spalling portion in the preferred embodiment of the present invention;
Fig. 5 is the energy absorption curve figure colliding composite endergonic device in the preferred embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is elaborated.
With reference to Fig. 1-2, a kind of collision composite endergonic device, comprises press section 1 and spalling portion 2; There is in described spalling portion 2 containing cavity 21, and the stacked fibrage being arranged at described containing cavity 21 sidewall, described fibrolaminar cross-sectional plane is rectangle; The inside of described containing cavity 21 is filled with energy-absorbing material 22; In the present embodiment, described energy-absorbing material 22 is foamed aluminium, and is transition fit with affiliated containing cavity 21.Described fibrage is divided into the silk fiber layer 23 and the stacked a plurality of carbon fiber layers be arranged at outside described silk fiber layer that are arranged at internal layer; Described carbon fiber layer is divided into stacked setting from outside to inside and has the first carbon fiber layer 24, second carbon fiber layer 25 and the 3rd carbon fiber layer 26 of same thickness.Fibre array angle in described first carbon fiber layer 24 and the angle of vertical direction are 45 °; Fibre array angle in second carbon fiber layer 25 and the angle of vertical direction are 0 °; Fibre array angle in 3rd carbon fiber layer 26 and the angle of vertical direction are-45 °; Fibre array angle in silk fiber layer 23 and the angle of vertical direction are 0 °.It is high that silk fiber layer 23 has intensity, good toughness, and quality is light, and the feature of the aspects such as energy absorbing efficient stable, improves the performance of whole device; Foamed aluminium material has higher and controlled pore-solids ratio, specific surface area is large, uniform foamed aluminium can absorb the energy of all directions, based on these characteristics of foamed aluminium, make it in compression process, have higher energy absorbing efficiency and stable compact model, the performance of the sound absorption damping of foamed aluminium simultaneously, can reduce vibrations and the noise of auto against generation.
Described press section 1 comprises pressure ram 11 and stripper plate 12; Described pressure ram 11 is interference fit with described containing cavity 21, and when being subject to External Force Acting, one end of described pressure ram 11 is stretched in described containing cavity 21, extrudes described energy-absorbing material 22; The other end of described pressure ram 11 connects stripper plate 12.Described pressure ram 11 and stripper plate 12 adopt entity structure, and through the carbon fibre reinforced composite of densification.
In the present embodiment, the material of described carbon fiber layer is carbon fibre reinforced composite.Because carbon fibre reinforced composite has the stress plateau of Gao Erkuan in loading process, make to tear in process efficient stable in energy absorbing at it, and carbon fibre reinforced composite also has concurrently advantages such as quality is light, intensity is high, good toughness.There is between described silk fiber layer 23 and the 3rd carbon fiber layer 26 gap of 7-10mm.The powerful Wear Characteristics of Epoxy Adhesive of SL3334 is adopted to connect between described first fibrage 24, second fibrage 25 and the 3rd fibrage 26.Due to the powerful epoxy glue of SL3334, to have adhesive strength high, and the advantages such as mechanical property is good, and environmental resistance ability is strong, improve the mechanical property between fibrage.
With further reference to Fig. 3-4, pressure ram 11 and silk fiber layer 23 are interference fit, when device is collided, pressure ram 11 is moved along the inwall of silk fiber layer 23 under impact force effect,, there is energy-absorbing---the longitudinal compression energy-absorbing of first stage, then in now pressure ram 11 longitudinal compression foamed aluminium, foamed aluminium is subject to the transverse shear stress of whole device wall due to lateral expansion, and energy-absorbing---the transverse shear stress energy-absorbing of subordinate phase occurs.Meanwhile, pressure ram 11 is pressed in the silk fiber layer 23 with its interference fit, makes silk fiber layer 23 spalling, and energy-absorbing---the spalling energy-absorbing of phase III occurs; Afterwards, lower extrusion plate 12 compressed carbon fibrage is used doing of impact force, during fibrage pressurized, because the orientation of the fiber in three layers of fibrage is different, therefore, fibrage will be torn toward front, rear, left and right four direction 90 ° of corners when being compressed, and the energy-absorbing-tear energy-absorbing of fourth stage occurs; Due to fibrage tear after be squeezed, when pressing plate is compressed to bottom about the 6-7mm apart from this energy absorption device, the bottom rigid of energy absorption device is increased, stops the further movement of pressing plate, better protect occupant, make it escape injury.The energy-absorbing effect of whole device as shown in Figure 5.
The above; be only the present invention's preferably detailed description of the invention, but the protection domain of invention is not limited thereto, and is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. collide a composite endergonic device, it is characterized in that: comprise press section and spalling portion; In described spalling portion, there is a containing cavity, and the stacked fibrage being arranged at described containing cavity sidewall; The inside of described containing cavity is filled with energy-absorbing material; Described fibrage is divided into the silk fiber layer and the stacked a plurality of carbon fiber layers be arranged at outside described silk fiber layer that are arranged at internal layer; Fibre array angle in described carbon fiber layer is not identical;
Described press section comprises pressure ram and stripper plate; Described pressure ram and described containing cavity are interference fit, and when being subject to External Force Acting, one end of described pressure ram is stretched in described containing cavity, extrudes described energy-absorbing material; The other end of described pressure ram connects stripper plate.
2. collision composite endergonic device according to claim 1, is characterized in that: described carbon fiber layer is divided into stacked setting from outside to inside and has the first carbon fiber layer of same thickness, the second carbon fiber layer and the 3rd carbon fiber layer.
3. collision composite endergonic device according to claim 2, is characterized in that: the fibre array angle in described first carbon fiber layer and the angle of vertical direction are 45 °; Fibre array angle in second carbon fiber layer and the angle of vertical direction are 0 °; Fibre array angle in 3rd carbon fiber layer and the angle of vertical direction are-45 °; Fibre array angle in silk fiber layer and the angle of vertical direction are 0 °.
4. collision composite endergonic device according to claim 3, is characterized in that: the material of described carbon fiber layer is carbon fibre reinforced composite.
5. collision composite endergonic device according to claim 2, is characterized in that: the gap between described silk fiber layer and the 3rd carbon fiber layer with 7-10mm.
6. collision composite endergonic device according to claim 2, is characterized in that: described first fibrage, adopt the powerful Wear Characteristics of Epoxy Adhesive of SL3334 to connect between the second fibrage and the 3rd fibrage.
7. collision composite endergonic device according to claim 1, is characterized in that: described energy-absorbing material is foamed aluminium; Described foamed aluminium and containing cavity are in transition fit.
8. collision composite endergonic device according to claim 1, is characterized in that: described pressure ram and stripper plate adopt entity structure, and through the carbon fibre reinforced composite of densification.
9. collision composite endergonic device according to claim 1, is characterized in that: described fibrolaminar cross-sectional plane is rectangle.
10. one kind by the purposes of collision composite endergonic application of installation in the vehicle according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004543.5A CN104691467B (en) | 2015-01-06 | 2015-01-06 | Collision composite endergonic device and purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004543.5A CN104691467B (en) | 2015-01-06 | 2015-01-06 | Collision composite endergonic device and purposes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104691467A true CN104691467A (en) | 2015-06-10 |
| CN104691467B CN104691467B (en) | 2016-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510004543.5A Expired - Fee Related CN104691467B (en) | 2015-01-06 | 2015-01-06 | Collision composite endergonic device and purposes |
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| CN (1) | CN104691467B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427842A (en) * | 2016-11-10 | 2017-02-22 | 无锡市明盛强力风机有限公司 | Composite fiber-wound cylindrical foamed aluminum automobile bumper system |
| CN106740616A (en) * | 2016-11-10 | 2017-05-31 | 无锡市明盛强力风机有限公司 | A kind of column foamed aluminium bumper system for vehicles |
| CN106884919A (en) * | 2017-03-02 | 2017-06-23 | 华侨大学 | A kind of embedded multi-stage, efficient energy absorption device |
| CN107097741A (en) * | 2017-05-31 | 2017-08-29 | 华侨大学 | Graded composite collision energy-absorbing pipe fitting |
| CN109070820A (en) * | 2016-04-15 | 2018-12-21 | 日产自动车株式会社 | energy absorbing structure |
| CN109466486A (en) * | 2018-11-28 | 2019-03-15 | 华侨大学 | A kind of sandwich level energy absorption device |
-
2015
- 2015-01-06 CN CN201510004543.5A patent/CN104691467B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109070820A (en) * | 2016-04-15 | 2018-12-21 | 日产自动车株式会社 | energy absorbing structure |
| CN109070820B (en) * | 2016-04-15 | 2021-07-06 | 日产自动车株式会社 | Energy absorbing structure |
| CN106427842A (en) * | 2016-11-10 | 2017-02-22 | 无锡市明盛强力风机有限公司 | Composite fiber-wound cylindrical foamed aluminum automobile bumper system |
| CN106740616A (en) * | 2016-11-10 | 2017-05-31 | 无锡市明盛强力风机有限公司 | A kind of column foamed aluminium bumper system for vehicles |
| CN106884919A (en) * | 2017-03-02 | 2017-06-23 | 华侨大学 | A kind of embedded multi-stage, efficient energy absorption device |
| CN106884919B (en) * | 2017-03-02 | 2023-04-07 | 华侨大学 | Embedded multistage high-efficient energy-absorbing device |
| CN107097741A (en) * | 2017-05-31 | 2017-08-29 | 华侨大学 | Graded composite collision energy-absorbing pipe fitting |
| CN107097741B (en) * | 2017-05-31 | 2023-08-29 | 华侨大学 | Gradient composite collision energy-absorbing pipe fitting |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104691467B (en) | 2016-11-02 |
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