Abstract
To improve the energy absorption efficiency of the cushioning structure and the driver's safety in vehicle passive safety, nine three-layer energy absorption structures were proposed using the mantis shrimp claw as a bionic prototype. The optimal structure of a double sinusoidal bidirectional dislocation wavy structure (DBD) was selected through the energy absorption evaluation index. The effects of two parameters, wall thickness T and section height H, on the energy-absorbing performance of the structure are further analyzed, and the optimal parameter combinations are obtained by using a multi-objective optimization method to obtain the Pareto frontier set of the optimal solution. The results show that the indexes are 18.38 kN for the IPF, 15.99 kJ/kg for the SEA, and 79.24% for the CFE, which are compared to a decrease of 1.32% for the IPF, an increase of 34.83% for the SEA, and an increase of 34.83% for the CFE. 34.83% and CFE by 40.49%. The crashworthiness of the double sinusoidal staggered structure is much better than that of the triangular sandwich structure. This study can provide a reference for the subsequent study of layered sandwich structures.
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