期刊论文

ROBUST DESIGN OF CRASH CUSHION ENERGY-ABSORBING BOX BASED ON THE CRASHWORTHINESS TOPOLOGY OPTIMIZATION

中文

机械强度

1001-9669

2020

42

01

102-108

10.16579/j.issn.1001.9669.2020.01.016

国家自然科学基金项目（51675059）资助~~；

本校为第一机构

为了提高防撞垫吸能盒的耐撞性,首先,依法规建立正碰,斜碰,偏碰和正侧碰四种工况的车辆-防撞垫有限元模型,运用元胞自动机的耐撞性拓扑优化方法,分别在横向和纵向拉伸约束下对吸能盒进行拓扑优化,优化结果表明:纵向拉伸约束下得到的梁式拓扑构型不同于横向拉伸约束得到的桶式拓扑构型,其中纵向拉伸约束下的梁式拓扑构型耐撞性更优;其次,考虑设计变量不确定因素对耐撞性目标响应的影响,结合田口方法和满意度函数对新型梁式吸能盒进行多目标稳健性优化设计。结果表明,优化后的吸能盒的加速度为106. 6 m/s2,小于200 m/s2,安全性能良好;比吸能为2. 54 kJ/kg,较优化前提高32. 8%;总满意度提高30. 4%,...

In order to improve the crashworthiness of the crash cushion energy-absorbing box,firstly,this paper established the“vehicle-crash cushion”FE models of frontal impact,offset impact,oblique impact and frontal side impact in accordance with the regulations,and then a crashworthiness topology optimization method of cellular automata was used for the energyabsorbing box topology optimization in the transverse and longitudinal extrusion constraint respectively,the optimized results show that the obtained beam configuration in the longitudinal extr...