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Impact energy absorption mechanism

A technology of impact part and limiter, which is applied in the field of impact energy absorption, and can solve problems such as secondary impact, unfavorable personnel, and equipment protection

Active Publication Date: 2016-05-25
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of elastic energy absorption can easily lead to the occurrence of secondary impact, which is often not conducive to the protection of personnel and equipment under impact conditions.

Method used

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Embodiment Construction

[0020] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined arbitrarily with each other.

[0021] The impact energy absorbing mechanism of the present invention includes an impacted part and an opposite part opposite to the impacted part in position; at least one martensitic primary phase shape memory alloy beam is supported between the impacted part and the opposite part.

[0022] The shape memory alloy systems discovered so far include at least the following types: AuCd, AgCd, CuZn, CuZnAl, CuZnSn, CuZnSi, CuSn, CuZnGa, InTi, AuCuZn, NiAl, FePt, NiTi, TiNiPd, TiNb, UNb and FeMnSi, etc. The following embodiments take NiTi alloy as an example.

[0023] figure 1 and figure 2 One embodiment of the impact energy absorbing mechanism of the present invention is shown. T...

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Abstract

The invention discloses an impact energy absorption mechanism. The impact energy absorption mechanism comprises an impacted part and an opposite part opposite to the impacted part in position, wherein at least one martensite initial phase shape memory alloy beam is supported between the impacted part and the opposite part, and a displacement restrictor can be further arranged between the impacted part and the opposite part. With the technical scheme, the impact energy absorption mechanism not only prevents the appearance of the secondary impact problem in an impact energy absorption process, but also can completely recover deformation of the shape memory alloy beam through a temperature rise; therefore, reusability of the mechanism is achieved.

Description

technical field [0001] The invention relates to the field of impact energy absorption, in particular to a reusable impact energy absorption mechanism. Background technique [0002] For vehicles such as automobiles and high-speed trains, the impact phenomenon has always been an extremely important and unavoidable problem. In recent years, with the rapid increase in the number of automobiles and high-speed trains and the continuous increase in driving speed, the collision problem has become more and more prominent. Rapidly increasing collision accidents will cause heavy personal casualties and property losses. The primary consideration in structural design. [0003] In the prior art, there have been researches and records on utilizing the properties of shape memory alloys for energy absorption. A common utilization method is to utilize the superelastic behavior of the initial phase of austenite in shape memory alloys. Utilizing the stress-induced austenite-martensite phase ...

Claims

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Application Information

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IPC IPC(8): B60R19/30B61F19/04
CPCB60R19/30B60R19/023B60R2019/026B61F19/04
Inventor 魏延鹏杨喆黄晨光
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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