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Buffering energy-absorption device with negative possion ratio characteristic

An energy-absorbing device and a specific technology, which is applied in transportation and packaging, vehicle safety arrangements, bumpers, etc., can solve the problems of low energy absorption efficiency, single energy absorption form, and low light weight

Active Publication Date: 2017-09-08
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing buffer energy-absorbing devices have a single energy-absorbing form, low energy-absorbing efficiency, poor energy-absorbing effect, low material utilization rate, and low degree of lightweight

Method used

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  • Buffering energy-absorption device with negative possion ratio characteristic
  • Buffering energy-absorption device with negative possion ratio characteristic
  • Buffering energy-absorption device with negative possion ratio characteristic

Examples

Experimental program
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Effect test

Embodiment Construction

[0028] Please check Figure 1 to Figure 6 , a cushioning energy-absorbing device with negative Poisson's ratio characteristics, including a tubular body unit 10, two support bases 20, an elastic body 30 and at least two honeycomb material units 40, and the support base 20 is made of a rigid plate. When the device in this embodiment is in use, it is better to make the support base 20 vertically face the collision source. When the energy-absorbing buffer device receives a collision load, the support base 20 can evenly decompose the load into each energy-absorbing structure.

[0029] The tube body unit 10 includes two tube bodies 11 which are connected inside and outside, and an energy-absorbing material part 12 arranged between the two tube bodies 11; Welding method to achieve solid connection. Among the present embodiment: the two pipe bodies 11 are round pipes and arranged coaxially, the axis of the pipe body unit 10 is also vertical to the support surface of the support seat...

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Abstract

The invention discloses a buffering energy-absorption device with the negative possion ratio characteristic. The buffering energy-absorption device comprises a tube unit, two supporting bases, an elastomer and at least two honeycomb material units. The tube unit comprises two tubes connected in a sleeved mode and an energy-absorption material part arranged between the two tubes, and the two supporting bases are fixedly connected to the two end openings of the tube unit. The elastomer is arranged in the tube, located on the inner side, of the tube unit, and the two ends of the elastomer can abut against and act on the two supporting bases respectively. The honeycomb material unit comprises an arc-shaped plate and a honeycomb material part, the two ends of the arc-shaped plate are fixedly connected to the two supporting bases, an arc-shaped opening is outwards formed, and the honeycomb material part is fixedly arranged between the back face of the arc-shaped plate and the outer wall of the tube, located on the outer side, of the tube unit. The buffering energy-absorption device has the advantages that energy can be absorbed in a multi-direction and multi-stage combined mode, materials and space can be sufficiently adopted, instant impacting force can be effectively reduced, and the energy absorption efficiency is high.

Description

technical field [0001] The invention relates to a buffer energy-absorbing device, in particular to a progressive combination type high-efficiency buffer energy-absorbing device with negative Poisson's ratio characteristics. Background technique [0002] Energy-absorbing devices involving materials and structures have important applications in many fields, such as energy-absorbing boxes for front and rear anti-collision beams of automobiles, energy-absorbing devices at the bottom of elevator cars, and energy-absorbing devices used in some other fields Anti-collision mechanism, etc. The passive safety of some engineering equipment with high safety requirements has been improved after the installation of buffer energy-absorbing devices, which reduces the instantaneous collision force when a collision accident occurs, and absorbs the huge energy generated during the collision, thereby reducing equipment. The user's casualty rate can effectively prevent secondary injuries. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/02
CPCB60R19/02B60R19/023B60R2019/026Y02A30/30
Inventor 张勇王琎徐翔闫晓刚赖雄鸣
Owner HUAQIAO UNIVERSITY
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