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Automobile energy absorbing device with negative poisson ratio

A negative Poisson's ratio, energy-absorbing device technology, applied in vehicle parts, transportation and packaging, bumpers, etc., can solve problems such as unsatisfactory energy-absorbing effect

Inactive Publication Date: 2017-09-22
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This energy-absorbing box is not ideal enough to absorb energy when the vehicle collides

Method used

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  • Automobile energy absorbing device with negative poisson ratio
  • Automobile energy absorbing device with negative poisson ratio
  • Automobile energy absorbing device with negative poisson ratio

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Embodiment Construction

[0024] The negative Poisson's ratio automobile energy-absorbing device of the present invention comprises a disc-shaped top plate 1 and a disc-shaped base 2, and a thin-walled inner cylinder 3 and a thin-walled outer cylinder 6 are arranged between the top plate 1 and the base 2, One end of the inner cylinder 3 is fixedly connected to the base 2, and the other end is fixedly connected to the top plate 1; one end of the outer cylinder 6 is fixedly connected to the base 2, and the other end is fixedly connected to the top plate 1;

[0025] A plurality of stacked negative Poisson's ratio modules 4 are set between the inner cylinder 3 and the outer cylinder 6;

[0026] An energy-absorbing filler 7 is installed inside the inner cylinder 3 .

[0027] In order to connect the negative Poisson's ratio automobile energy-absorbing device of the present invention between the front bumper of the automobile and the front longitudinal beam of the automobile, a front connecting plate 11 is pr...

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Abstract

The invention discloses an automobile energy absorbing device with negative poisson ratio. The automobile energy absorbing device with the negative poisson ratio comprises a circular disc-shaped top plate (1) and a circular disc-shaped base (2); a thin-walled inner cylinder (3) and a thin-walled outer cylinder (6) are arranged between the top plate (1) and the base (2); one end of the inner cylinder (3) is fixedly connected with the base (2); the other end of the inner cylinder (3) is fixedly connected with the top plate (1); one end of the outer cylinder (6) is fixedly connected with the base (2); the other end of the outer cylinder (6) is fixedly connected with the top plate (1); a plurality of overlapped negative poisson ratio modules (4) are sleeved between the inner cylinder (3) and the outer cylinder (6); and an energy absorbing filler (7) is mounted on the internal side of the inner cylinder (3). The automobile energy absorbing device with the negative poisson ratio has the advantages of better energy absorbing effect and stabler structure.

Description

technical field [0001] The invention belongs to the technical field of vehicle anti-collision energy-absorbing devices, in particular to a negative Poisson's ratio automobile energy-absorbing device with better energy-absorbing effect. Background technique [0002] The anti-collision ability of automobile body plays an extremely important role in protecting the safety of passengers. In order to ensure the safety of the occupants, a bumper system is usually installed at the front and rear of the car. In order to absorb the energy of the impact as much as possible, an energy-absorbing device will be added to the bumper system. [0003] China's invention patent application "An energy-absorbing box for an automobile sub-frame" (application number: 200620075281.8, publication date: ) discloses an energy-absorbing box connected to the front bumper and the longitudinal beam of the automobile, installed on the sub-frame and the body Between the front beams, the energy-absorbing bo...

Claims

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Application Information

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IPC IPC(8): B62D21/15B60R19/02
CPCB62D21/15B60R19/02
Inventor 高强王良模江怡王中兴孙鹏程
Owner NANJING UNIV OF SCI & TECH
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