Array type metal cup-shaped thin wall structure energy absorber

Abstract

The invention provides an array-type metal thin-wall cup-shaped structural energy absorber, relates to an energy absorber, and aims at solving the problems that the existing combined energy absorbers the thin-wall cylindrical tubes of which are filled with porous materials such as aluminum honeycomb, foamed aluminum and the like has very big impact at the initial stage of buffer and the buffer force tends to be stable after the stage. The energy absorber comprises a thin-wall metal plate (1) and a plurality of cup-shaped projections (2) which are stamped at the same side of the thin-wall metal plate (1) and take array distribution. The thin-wall cup-shaped structural form with variable cross-section causes the impact force of the energy absorber to be more stable, thus a protected object can be under very good protection. The energy absorber has high working reliability; as the energy absorber can be divided into the form of combining a plurality of sub-energy absorbers, thus the energy absorber has higher working reliability. The energy absorber can be applied to the fields of automobile safety and structural crash worthiness of high-speed trains.

Description

technical field [0001] The invention relates to an energy absorber. Background technique [0002] The metal thin-walled structure is a traditional energy-absorbing structure, and it is also one of the most widely used buffering energy-absorbing structures. However, during the impact process of the thin-walled metal cylindrical tube as an energy absorber, its load fluctuates greatly, so that the protected object will be damaged. Unstable impact load, and the energy absorbed per unit volume is small. Aluminum honeycomb and aluminum foam energy absorbers have the advantages of simple structure, high specific energy absorption, relatively stable impact load and recyclability, and are widely used in the fields of structural crashworthiness and other fields. However, compared with the combined energy absorber, the specific energy absorption of the above two types of energy absorbers is relatively small, which is not conducive to the lightweight and miniaturized design of the ener...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing combined energy absorber filled with porous materials such as aluminum honeycomb and foamed aluminum in thin-walled cylindrical tubes has a large impact force at the initial stage of buffering, and after this stage, the buffering To solve the problem that the force will tend to be stable, an array type metal cup-shaped thin-walled structure energy absorber is provided

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