Design method of multi-dimensional multi-rigidity light energy absorption structure

Abstract

The invention relates to a multi-dimensional multi-rigidity light energy absorption structure design method which comprises the following steps: step 1, carrying out regionalization cutting on an original cavity structure (8), determining the weakest region as a second partition (2) through simulation calculation, determining the upper part of the second partition (2) as a first cavity (1), and determining the lower part of the second partition (2) as a second cavity (3); 2, materials of the first cavity (1), the second partition section (2) and the second cavity (3) are selected; 3, the second partition section (2) is arranged to be of a solid structure; 4, according to the size of the first cavity (1), the arrangement mode of the 3D tiled structure of the first reinforcement body (4) is calculated; and step 5, according to the size of the second cavity (3), calculating the arrangement mode of the 3D tiled structure of the second reinforcement body (9). The structure is simple, the design method is high in portability, the number of design parameters is small, and the device can be rapidly matched with various cavity structures and used for regulating and controlling the deformation mode and the energy absorption characteristic of a bearing structure.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a design method of a multi-dimensional and multi-rigidity lightweight energy-absorbing structure. Background technique [0002] The energy-absorbing structure of automobiles is an important measure to ensure the safety of occupants. At present, a large number of researches on energy-absorbing characteristics of energy-absorbing structures have been conducted for different material types, cross-sectional shapes and filling different low-density materials or structures. In recent years, relevant studies have shown that single crystal structures have the advantages of light weight, high porosity, and high specific strength. Using different single crystal types as 3D structures to fill energy-absorbing hollow structures can endow energy-absorbing structures with the best performance. energy absorption properties. At the same time, with the development of 3D printing technology, the manufa...

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Problems solved by technology

However, the above-mentioned materials will lead to a significant decrease in the stiffness of the energy-absorbing structure, making it more likely to occur the overall bending behavior that is not conducive to energy-absorbing

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