Hierarchical origami-shaped automobile collision energy-absorbing structure

Abstract

The invention discloses a hierarchical origami-shaped automobile collision energy-absorbing structure. The hierarchical origami-shaped automobile collision energy-absorbing structure comprises a plurality of energy-absorbing layers and an origami-shaped induction tube, wherein the origami-shaped induction tube is a Z-shaped folded metal tube formed by folding a metal sheet through a Miura foldingmethod; adjacent energy-absorbing layers are connected with each other through the folded paper-shaped induction tubes; the plurality of energy-absorbing layers comprise a honeycomb energy-absorbing layer and a porous material energy-absorbing layer coaxially distributed from top to bottom; the honeycomb energy-absorbing layer comprises two first metal plates and a metal material with a special-shaped honeycomb structure filled between the two first metal plates; and the porous material energy-absorbing layer comprises two second metal plates and a porous metal material filled between the twosecond metal plates. The hierarchical origami-shaped automobile collision energy-absorbing structure has good dynamic performance and safety; and sufficient strength and energy-absorbing are ensured by using aluminum alloy, titanium metal and porous metal while having very light weight

Description

technical field [0001] The invention relates to a hierarchical origami-shaped automobile collision energy-absorbing structure Background technique [0002] With the rapid development of China's automobile industry and the substantial increase in car ownership, the number of casualties and property losses caused by traffic accidents in my country is also increasing every year, and the passive safety performance of automobiles has therefore received more attention; at the same time, the industrial development has brought The problem of environmental pollution is becoming more and more serious. Studies have shown that the fuel consumption of a car is closely related to the quality of the car. For every 10% reduction in car quality, the fuel consumption will drop by 6-8%, and the resulting carbon emissions will also follow. Therefore, the lightweight design of the car will be of great significance. [0003] The energy-absorbing box structure installed on the longitudinal beam of ...

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Problems solved by technology

[0003] The energy-absorbing box structure installed on the longitudinal beam of the automobile beam is the main part of the automobile to absorb collision energy. It absorbs collision energy through plastic deformation through crushing; at present, most automobile collision energy-absorbing structures are square or round tubular components , although the structure is simple and the production cost is low, but because of its high peak stress and low specific energy absorption, it is not ideal in terms of safety; while other energy-absorbing structures with more complex structures have improved safety, but production The cost and maintenance cost are high. At the same time, the mass of the existing car crash absorbing boxes is generally heavy, which does not meet the requirements of today's lightweight design of cars; therefore, a car with high total energy absorption, high energy absorption efficiency, light weight and simple structure is designed. Energy-absorbing structures are of great significance to the safety, environmental protection and economy of automobiles

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