A Recoverable Deformable Automotive Crash Box Based on Additive Manufacturing

Abstract

The invention discloses a recoverable and deformable energy-absorbing box for automobiles based on additive manufacturing, which comprises an upper end cover, a filling structure, a thin-walled shell, a mounting plate and a thin-walled corrugated pipe, the bottom of the thin-walled shell is provided with a mounting plate, and the mounting plate There are several installation holes on the top, the filling structure is set inside the thin-walled shell, the thin-walled bellows is set inside the filling structure, and the upper end cover is set on the top of the thin-walled shell; the thin-walled shell is detachable from the anti-collision beam of the car through the mounting holes The connection, filling structure, thin-walled shell and thin-walled bellows are integrally printed and formed of high-entropy alloy materials; the invention has excellent energy absorption characteristics, and the filling structure proposed by the invention is a regular hexahedron in which the four sides of the two opposite faces are respectively It is connected with four other unit cell structures in different directions, which improves the energy absorption while improving the bearing capacity of the energy-absorbing box, so that it can maintain the stability and continuity of energy absorption, high bearing capacity, good stability, and can be reused. Reduce car maintenance costs.

Description

technical field [0001] The invention relates to the field of automobile passive safety, in particular to a recoverable deformable automobile energy-absorbing box based on additive manufacturing. Background technique [0002] In recent years, with the rapid growth of China's science and technology, people's living standards have been greatly improved, and the number of cars in my country has increased rapidly. According to statistics, there were 238,351 traffic accidents in the country in 2019, with a death toll of 67,759 people; the direct property loss was 9.1 Therefore, the safety of automobiles has become an increasingly concerned issue in the development of automobiles. The research on energy-absorbing boxes for automobiles is of great significance to ensure the safety of life and property of drivers and passengers. [0003] The energy-absorbing box is the energy-absorbing device in the bumper. When a collision occurs, it absorbs energy through its own compression deforma...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a recoverable and deformable automotive energy-absorbing box based on additive manufacturing, which solves the problems of low energy-absorbing efficiency of traditional energy-absorbing boxes and high vehicle maintenance costs caused by non-recoverable deformation of the energy-absorbing box.

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