The invention discloses a novel petal negative Poisson's ratio bumper system and a multidisciplinary optimization method thereof, and provides a novel bumper system based on a petal negative Poisson's ratio material in combination with the characteristics of light weight, high energy absorption characteristic and impact resistance of a negative Poisson's ratio structure. The system comprises a skin, an energy absorption block covering plate, a petal negative Poisson's ratio energy absorption block, a cross beam covering plate, a petal negative Poisson's ratio bumper cross beam and an energy absorption box. Besides, the macroscopic mechanical property of the bumper beam is achieved by optimizing microstructure parameters of the material, damage to the shanks of pedestrians is further reduced while the crashworthiness of an original bumper beam is not changed, and the bumper system gives consideration to the crashworthiness and the pedestrian protection performance.
本发明公开了一种新型花瓣负泊松比保险杠系统及其多学科优化方法,结合负泊松比结构轻质,高能量吸收特性和抗冲击能力的特点,提出一种基于花瓣负泊松比材料的新型保险杠系统,系统包括蒙皮、吸能块覆盖板、花瓣负泊松比吸能块、横梁覆盖板、花瓣负泊松比保险杠横梁、吸能盒;此外,通过对材料微观结构参数的优化实现其宏观力学性能,实现了在不改变原有保险杠横梁耐撞性的同时,进一步降低行人小腿所受到的伤害,实现了保险杠系统对耐撞性和行人保护性能的兼顾。
Novel petal negative Poisson's ratio bumper system and multidisciplinary optimization method thereof
一种新型花瓣负泊松比保险杠系统及其多学科优化方法
2022-02-22
Patent
Elektronische Ressource
Chinesisch
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