CN108482286A - A kind of automobile collision buffering energy absorption device - Google Patents
A kind of automobile collision buffering energy absorption device Download PDFInfo
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- CN108482286A CN108482286A CN201810382059.XA CN201810382059A CN108482286A CN 108482286 A CN108482286 A CN 108482286A CN 201810382059 A CN201810382059 A CN 201810382059A CN 108482286 A CN108482286 A CN 108482286A
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- outer cylinder
- energy
- energy absorption
- honeycomb
- primary
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 39
- 230000003139 buffering effect Effects 0.000 title claims abstract description 12
- 239000011162 core material Substances 0.000 claims description 55
- 241000264877 Hippospongia communis Species 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 22
- 239000010410 layer Substances 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 12
- 239000011247 coating layer Substances 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000002105 nanoparticle Substances 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 9
- -1 polysiloxane Polymers 0.000 claims description 9
- 229920002545 silicone oil Polymers 0.000 claims description 9
- 230000003019 stabilising effect Effects 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- 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
- B60R2019/026—Buffers, i.e. bumpers of limited extent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a kind of automobile collision buffering energy absorption devices, including：Front mounting plate；Primary structure, secondary structure, one end are fixedly mounted on the first intermediate stable plate, including：Two level outer barrel；Two level energy-absorbing unit is honeycomb molded body, and section is netted, and the two level energy-absorbing unit is located in the two level outer barrel；Second intermediate stable plate, is detachably connected the other end of the secondary structure；Tertiary structure, one end are fixedly mounted on the second intermediate stable plate, including：Three-level outer barrel and three-level energy-absorbing unit；Mounting plate afterwards is detachably connected the tertiary structure other end, using three-level endergonic structure, improves the energy-absorbing effect of original endergonic structure.
Description
Technical Field
The invention relates to the field of automobiles, in particular to an automobile collision buffering energy-absorbing device.
Background
The existing automobile has higher and higher requirements on the safety performance of crews, and higher requirements on the passive safety of motor vehicles are provided.
Disclosure of Invention
The invention designs and develops a collision buffering energy-absorbing device for an automobile, which adopts a three-level energy-absorbing structure and improves the energy-absorbing effect of the original energy-absorbing structure.
The invention also aims to provide an energy absorption structure consisting of the core material and the fluid material, and the structural parameters of the core material are given, so that the vibration resistance and the shock resistance of the energy absorption device of the core material are improved on the basis of keeping the original excellent performance of the traditional core material.
The technical scheme provided by the invention is as follows:
a collision buffering energy-absorbing device for an automobile comprises:
a front mounting plate;
a primary structure, one end of which is connected to the front mounting plate, comprising:
a first-stage outer cylinder;
a primary energy absorption unit which is arranged inside the primary outer cylinder and comprises core materials and a fluid material filled between the core materials and/or between the core materials and the primary outer cylinder;
one end of the first middle stabilizing plate is connected with the other end of the primary structure;
a secondary structure fixedly mounted at one end to said first intermediate stabilising plate, comprising:
a secondary outer cylinder;
the secondary energy absorption unit is a honeycomb structure body, the cross section of the secondary energy absorption unit is net-shaped, and the secondary energy absorption unit is arranged in the secondary outer cylinder;
a second intermediate stabilising plate removably connected to the other end of the secondary structure;
a tertiary structure fixedly mounted at one end to said second intermediate stabilising plate, comprising:
a third-stage outer cylinder;
the three-stage energy absorption unit is arranged inside the three-stage outer cylinder and comprises core materials and fluid materials filled between the core materials and/or between the core materials and the three-stage outer cylinder;
and the rear mounting plate is detachably connected with the other end of the tertiary structure.
Preferably, the first-stage outer cylinder and the third-stage outer cylinder are trapezoidal cylinders.
Preferably, the primary outer cylinder comprises a first inner layer and first coating layers coated on two sides of the first inner layer; the three-stage outer barrel comprises a third inner layer and third coating layers coated on two sides of the third inner layer.
Preferably, the thickness of the first inner layer and the third inner layer is 0.12-0.15mm, and the thickness of the coating layer is 0.02-0.06 mm.
Preferably, the first lining layer and the third lining layer are made of 0.21-0.26% of iron, 0.37-0.41% of silicon, 1.22-1.26% of manganese, 0.03-0.06% of zirconium, 0.02-0.08% of sodium, 1.2-1.5% of copper, 1.1-1.6% of copper and the balance of aluminum and inevitable impurities by mass percentage.
Preferably, the first coating layer and the third coating layer are made of materials including: the mass percentage is as follows: 0.03 to 0.06% of iron, 0.12 to 0.15% of zirconium, 0.17 to 0.28% of sodium, 1.2 to 1.5% of copper, 0.04 to 0.08% of magnesium, and the balance of aluminum and inevitable impurities.
Preferably, the mass percentage of the inevitable impurities is not more than 0.24%.
Preferably, the core material is an aluminum honeycomb core material.
Preferably, the fluid material is prepared by mixing micro-nano particles and low-viscosity silicone oil; wherein the mass percent of the micro-nano particles is 10.8-32.7%, and the mass percent of the low-viscosity silicone oil is 67.3-89.2%;
wherein the micro-nano particles are one or more of silicon dioxide, transition metal oxide and non-oxidized particles; the low-viscosity silicone oil is one or more of hydroxyl-terminated polysiloxane, methoxy-terminated polysiloxane and ethoxy-terminated polysiloxane.
Preferably, the honeycomb core material comprises a plurality of round honeycombs, and the wall thickness of each round honeycomb is as follows:
wherein,e is the modulus of elasticity, R, of the aluminum material used for the honeycomb core1Is the radius of the bottom surface of the outer cylinder, R2Is the radius of the top surface of the outer cylinder, L is the length of the honeycomb core material, FλThe value of the coefficient related to the instantaneous acting force is 9.8 multiplied by 104N and C are constants with the value of 0.215, x is a coefficient related to the length and the value of the coefficient is 2.8-3.6 cm,
the radius of the round honeycomb is
Wherein E is beeModulus of elasticity, F, of the aluminium material used for the core material of the socketλThe value of the coefficient related to the instantaneous acting force is 9.8 multiplied by 104N, L is the length of the honeycomb core material, t is the wall thickness of the round honeycomb, h is the depth coefficient, the value of which is 0.32,is the compressive strength ratio; p is a radical ofyThe maximum compressive strength of the honeycomb core is shown, and p is the average compressive strength received by the honeycomb core, and the value is 120 MPa.
The invention has the advantages of
The invention designs and develops a collision buffering energy-absorbing device for an automobile, which adopts a three-level energy-absorbing structure and improves the energy-absorbing effect of the original energy-absorbing structure. The energy absorption structure composed of the core material and the fluid material is provided, the structural parameters of the core material are given, and the vibration resistance and the shock resistance of the energy absorption device of the core material are improved on the basis of keeping the original excellent performance of the traditional core material
Drawings
FIG. 1 is a schematic structural view of a vehicle crash cushion energy absorber according to the present invention.
Fig. 2 is a schematic diagram of a primary structure according to the present invention.
FIG. 3 is a schematic diagram of a secondary structure according to the present invention.
Fig. 4 is a schematic diagram of a three-level structure according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in FIG. 1, the impact absorption device for a vehicle according to the present invention comprises a front mounting plate 110, a primary structure 120, a first middle stabilizer plate 130, a secondary structure 140, a second middle stabilizer plate 150, a tertiary structure 160, and a rear mounting plate 170 in this order.
The front mounting plate 110 is round or square, mounting holes are formed in the periphery of the mounting plate, and the collision buffering energy absorption device can be mounted on an automobile through bolts; mounting panel 110 before primary structure 120 one end is connected, for the stress of reinforcing primary structure 110, improved its structure, include: the energy-saving device comprises a primary outer cylinder 121 and a primary energy-absorbing unit 122, wherein the primary outer cylinder 121 is a trapezoid cylinder, the primary energy-absorbing unit 122 is filled in the primary outer cylinder 121, and the primary energy-absorbing unit 122 comprises core materials and fluid materials filled between the core materials and/or between the core materials and the primary outer cylinder; one end of the first intermediate stabilizing plate 130 is connected to the other end of the primary structure 120; secondary structure 140 is fixedly mounted at one end to first intermediate stabilizing plate 130 and includes: a secondary outer cylinder 141 and a secondary energy absorption unit 142; the secondary energy absorption unit 142 is a honeycomb structure, the cross section of the secondary energy absorption unit is a net shape, and the secondary energy absorption unit 142 is filled in the secondary outer cylinder 141; a second intermediate stabilising plate 150 is removably attached to the other end of secondary structure 140; tertiary structure 160 is fixedly mounted at one end to second intermediate stabilizing plate 150 and includes: a tertiary outer cylinder 161; the three-stage energy absorption unit 162 is filled in the three-stage outer cylinder 161 and comprises core materials and fluid materials filled between the core materials and/or between the core materials and the three-stage outer cylinder 161; rear mounting plate 170 is removably attached to tertiary structure 160.
2-4, in another embodiment, primary tub 121 and tertiary tub 161 are trapezoidal shaped cylinders. The first-stage outer cylinder 121 and the third-stage outer cylinder 161 have the same structure and comprise an inner layer and a coating layer, wherein the thickness of the inner layer is preferably 0.12-0.15mm, and the thickness of the coating layer is preferably 0.02-0.06 mm.
The lining material comprises, by mass, 0.21-0.26% of iron, 0.37-0.41% of silicon, 1.22-1.26% of manganese, 0.03-0.06% of zirconium, 0.02-0.08% of sodium, 1.2-1.5% of copper, 1.1-1.6% of copper, and the balance aluminum and inevitable impurities.
The coating material includes: the mass percentage is as follows: 0.03 to 0.06% of iron, 0.12 to 0.15% of zirconium, 0.17 to 0.28% of sodium, 1.2 to 1.5% of copper, 0.04 to 0.08% of magnesium, and the balance of aluminum and inevitable impurities.
The mass percentage of the impurities as a preferable inevitable impurity is not more than 0.24%. The core material is an aluminum honeycomb core material. The fluid material is prepared by mixing micro-nano particles and low-viscosity silicone oil; wherein the mass percent of the micro-nano particles is 10.8-32.7%, and the mass percent of the low-viscosity silicone oil is 67.3-89.2%; wherein, the micro-nano particles are one or more of silicon dioxide, transition metal oxide and non-oxidized particles; the low-viscosity silicone oil is one or more of hydroxyl-terminated polysiloxane, methoxy-terminated polysiloxane and ethoxy-terminated polysiloxane.
The core material is aluminium honeycomb core material, and honeycomb core material includes a plurality of circular honeycombs, and the wall thickness of circular honeycomb is:
wherein,e is the modulus of elasticity, R, of the aluminum material used for the honeycomb core1Is the radius of the bottom surface of the outer cylinder, R2Is the radius of the top surface of the outer cylinder, L is the length of the honeycomb core material, FλThe value of the coefficient related to the instantaneous acting force is 9.8 multiplied by 104N and C are constants with the value of 0.215, x is a coefficient related to the length and the value of the coefficient is 2.8-3.6 cm,
the radius of the round honeycomb is
Wherein E is the modulus of elasticity of the aluminum material used for the honeycomb core material, FλIs operated in an instantForce dependent coefficient of 9.8X 104N, L is the length of the honeycomb core material, t is the wall thickness of the round honeycomb, h is the depth coefficient, the value of which is 0.32,is the compressive strength ratio; p is a radical ofyP is the maximum compressive strength of the honeycomb core and p is the average compressive strength to which the honeycomb core is subjected, and has a value of 120 MPa.
In an experimental example, the energy absorption device provided by the invention is subjected to energy absorption test, the whole experimental system comprises a striking rod, a speed measuring device, an experimental piece, recording equipment and an output device, wherein the speed measuring device comprises a signal lamp and an electronic calculator, the recording equipment comprises 2000 frames/second high-speed photographic equipment, the photographic equipment is vertically placed below the experimental piece, the input force in the experiment is equal, and the energy absorption condition of the experimental piece is compared under the same condition: the experimental part is a structure with a plurality of energy absorption units and comprises a plurality of energy absorption units, and specific parameters of the experimental part are shown in Table 1
TABLE 1 Experimental part parameter table
The experimental result can be analyzed, the sample piece A can be obviously deformed after 2ms, the deformation is maximum after 3ms, and an obvious rebound process can be realized after 4 ms.
The experimental pieces are all concave due to complex reflection of stress waves, deformation of the experimental pieces does not occur along the direction of impact speed, deformation of the middle part is maximum, the energy absorption rate of the experimental pieces is calculated according to experimental results, and the experimental results are summarized as shown in Table 2
TABLE 2 energy absorption Rate of the test pieces
In the table, the impact speed refers to the speed of the impact rod impacting the experimental piece, and the reflection speed refers to the rebound speed of the impact rod impacting the experimental piece.
As can be seen from Table 2, comparing sample A with comparative sample 1, the energy absorption rate of sample A is higher, the energy absorption effect is better, and comparing sample A with data of comparative file 2 shows that the energy absorption unit added with fluid material has better energy absorption effect. The data comparison of the sample piece B and the comparison piece 3 shows that the outer cylinder with the coating layer and the coating layer has better energy absorption effect than the aluminum outer cylinder. Therefore, the structural design of the sample piece is reasonable, and the energy absorption effect of the energy absorption device is effectively improved.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a collision buffering energy-absorbing device for car which characterized in that includes:
a front mounting plate;
a primary structure, one end of which is connected to the front mounting plate, comprising:
a first-stage outer cylinder;
a primary energy absorption unit which is arranged inside the primary outer cylinder and comprises core materials and a fluid material filled between the core materials and/or between the core materials and the primary outer cylinder;
one end of the first middle stabilizing plate is connected with the other end of the primary structure;
a secondary structure fixedly mounted at one end to said first intermediate stabilising plate, comprising:
a secondary outer cylinder;
the secondary energy absorption unit is a honeycomb structure body, the cross section of the secondary energy absorption unit is net-shaped, and the secondary energy absorption unit is arranged in the secondary outer cylinder;
a second intermediate stabilising plate removably connected to the other end of the secondary structure;
a tertiary structure fixedly mounted at one end to said second intermediate stabilising plate, comprising:
a third-stage outer cylinder;
the three-stage energy absorption unit is arranged inside the three-stage outer cylinder and comprises core materials and fluid materials filled between the core materials and/or between the core materials and the three-stage outer cylinder;
and the rear mounting plate is detachably connected with the other end of the tertiary structure.
2. The automobile collision buffering energy-absorbing device according to claim 1, wherein the primary outer cylinder and the tertiary outer cylinder are trapezoidal cylinders.
3. The automobile collision buffering and energy absorbing device as claimed in claim 2, wherein the primary outer cylinder comprises a first inner layer and first coating layers coated on two sides of the first inner layer; the three-stage outer barrel comprises a third inner layer and third coating layers coated on two sides of the third inner layer.
4. The automobile crash cushion energy absorber according to claim 3, wherein said first inner layer and said third inner layer have a thickness of 0.12-0.15mm, and said cladding layer has a thickness of 0.02-0.06 mm.
5. The automobile collision buffer energy absorption device according to claim 4, wherein the first lining layer and the third lining layer are made of 0.21-0.26% of iron, 0.37-0.41% of silicon, 1.22-1.26% of manganese, 0.03-0.06% of zirconium, 0.02-0.08% of sodium, 1.2-1.5% of copper, 1.1-1.6% of copper, and the balance of aluminum and inevitable impurities.
6. The automobile crash cushion energy absorber according to claim 5, wherein said first cladding layer and said third cladding layer are made of materials including: the mass percentage is as follows: 0.03 to 0.06% of iron, 0.12 to 0.15% of zirconium, 0.17 to 0.28% of sodium, 1.2 to 1.5% of copper, 0.04 to 0.08% of magnesium, and the balance of aluminum and inevitable impurities.
7. The automobile collision buffer energy-absorbing device according to claim 5 or 6, characterized in that the mass percentage of the unavoidable impurities is not more than 0.24%.
8. The automobile collision buffer and energy absorption device according to claim 1, wherein the core material is an aluminum honeycomb core material.
9. The automobile collision buffering energy-absorbing device according to claim 8, wherein the fluid material is made by mixing micro-nano particles and low-viscosity silicone oil; wherein the mass percent of the micro-nano particles is 10.8-32.7%, and the mass percent of the low-viscosity silicone oil is 67.3-89.2%;
wherein the micro-nano particles are one or more of silicon dioxide, transition metal oxide and non-oxidized particles; the low-viscosity silicone oil is one or more of hydroxyl-terminated polysiloxane, methoxy-terminated polysiloxane and ethoxy-terminated polysiloxane.
10. The automobile collision buffer energy-absorbing device according to claim 9, wherein the honeycomb core material comprises a plurality of round honeycombs, and the wall thickness of the round honeycombs is as follows:
wherein,e is the modulus of elasticity, R, of the aluminum material used for the honeycomb core1Is the radius of the bottom surface of the outer cylinder, R2Is the radius of the top surface of the outer cylinder, L is the length of the honeycomb core material, FλThe value of the coefficient related to the instantaneous acting force is 9.8 multiplied by 104N and C are constants with the value of 0.215, x is a coefficient related to the length and the value of the coefficient is 2.8-3.6 cm,
the radius of the round honeycomb is
Wherein E is the modulus of elasticity of the aluminum material used for the honeycomb core material, FλThe value of the coefficient related to the instantaneous acting force is 9.8 multiplied by 104N, L is the length of the honeycomb core material, t is the wall thickness of the round honeycomb, h is the depth coefficient, the value of which is 0.32,is the compressive strength ratio; p is a radical ofyThe maximum compressive strength of the honeycomb core is shown, and p is the average compressive strength received by the honeycomb core, and the value is 120 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810382059.XA CN108482286B (en) | 2018-04-26 | 2018-04-26 | Collision buffering energy-absorbing device for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810382059.XA CN108482286B (en) | 2018-04-26 | 2018-04-26 | Collision buffering energy-absorbing device for automobile |
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| Publication Number | Publication Date |
|---|---|
| CN108482286A true CN108482286A (en) | 2018-09-04 |
| CN108482286B CN108482286B (en) | 2020-01-14 |
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| CN201810382059.XA Expired - Fee Related CN108482286B (en) | 2018-04-26 | 2018-04-26 | Collision buffering energy-absorbing device for automobile |
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| CN111022538A (en) * | 2019-12-06 | 2020-04-17 | 华侨大学 | Multifunctional gradient energy absorption box |
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| CN109263588B (en) * | 2018-09-18 | 2020-11-13 | 北汽福田汽车股份有限公司 | Energy-absorbing box, crashproof roof beam subassembly and vehicle |
| CN111022538A (en) * | 2019-12-06 | 2020-04-17 | 华侨大学 | Multifunctional gradient energy absorption box |
| CN111022538B (en) * | 2019-12-06 | 2024-03-12 | 华侨大学 | Multifunctional gradient energy absorption box |
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