Biomimetic skeleton type memory alloy collision buffer

Abstract

A biomimetic skeleton type memory alloy collision buffer is disclosed. A carbon fiber composite material cover layer respectively covers the upper surface and the low surface of a NiTi shape memory alloy biomimetic skeleton, and is adhered and fixed together with the NiTi shape memory alloy biomimetic skeleton through an oxidized resin glue, to form the collision buffer; the NiTi shape memory alloy biomimetic skeleton is composed of an M-shaped NiTi alloy bracket and a grid-shaped NiTi alloy sheet, the M-shaped NiTi alloy bracket is welded on the grid-shaped NiTi alloy sheet, to form a single-layer skeleton structure, and the single-layer skeleton structures are welded layer by layer to form the NiTi shape memory alloy biomimetic skeleton. Four bolt holes are reserved in the carbon fiber composite cover layer on one side of the collision buffer, and the collision buffer is fixedly connected with other parts of the vehicle through bolts and nuts. According to the invention, the energy absorption performance of the collision buffer is improved, a large weight reduction is realized, automatic recovery after the collision load is unloaded can be realized, and the service life of the collision buffer is prolonged.

Description

technical field [0001] The invention belongs to the design field of buffer energy-absorbing devices for vehicle collision protection. Aiming at the requirements of the collision energy dissipation and absorption performance of the buffer device, a bionic bone memory alloy collision buffer is designed, which adopts the structural design concept of bionic bone and the application technology of lightweight composite materials, and combines NiTi shape memory alloy material in load unloading. After the recovery characteristics, to realize the automatic repair of the impact buffer after the impact load, while maintaining the same performance as the conventional impact buffer, a significant weight reduction has been achieved. Background technique [0002] Collision buffers are generally arranged at the front and rear of the vehicle. In the event of a frontal collision or a rear-end collision, they need to have better energy-absorbing characteristics to facilitate the dissipation of...

AI Technical Summary

Problems solved by technology

Conventional collision buffers are made of steel plates through roll bending, stamping, welding and other processes. In order to ensure their impact resistance and reliability, there is usually redundant material thickness and a large space for weight reduction; and in After the collision accident, if the collision buffer has a large deformation, it needs to be replaced immediately, otherwise it will affect its cushioning and energy absorption effect

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