摘要
针对汽车轻量化和碰撞安全性需求,制备一种泡沫填充铝合金波纹夹芯板复合结构。通过试验和仿真分析,探讨了该夹芯板的压缩、弯曲和抗冲击特性,采用正交试验分析了夹芯板面板和波纹芯板的厚度对其结构抗冲击性的影响,获得板材厚度组合方案。采用变密度法,对夹芯板填充泡沫的分布进行拓扑优化,在保证冲击特性的前提下尽量减小填充泡沫的体积。最后将优化后的夹芯板结构应用于某汽车前车门外板,评价其性能。结果表明,前车门外板采用夹芯板结构后最大侵入量和侵入速度均有不同程度的降低,满足了提升车身轻量化和安全性的设计要求。
Aiming at the lightweighting and crashworthiness requirements of vehicle, a foam-filled aluminum alloy corrugated sandwich panel structure is prepared. The compression, bending and impact resistance of sandwich panel are investigated by tests and simulations, and the effects of the thickness of facial sheets and corrugated core sheet of sandwich panels on their structural impact resistance are analyzed by orthogonal tests, with reasonable combination of sheet thickness obtained. A topology optimization on the filled foam distribution of sandwich panel is conducted with variable density method so as to reduce the volume of filled foam as far as possible while ensuring its impact characteristics. Finally, the optimized sandwich panel structure is applied to the front door outer panel of a car to evaluate its performance. The results show that both the maximum intrusion and intrusion speed of the front door outer panel with sandwich structure reduce to different extents, meeting the design requirements in enhancing safety and reducing body mass of vehicle.
作者
崔岸
刘芳芳
张晗
郝裕兴
陈宠
张睿
Cui An;Liu Fangfang;Zhang Han;Hao Yuxing;Chen Chong;Zhang Rui(Jilin University, State Key Laboratory of Automotive Simulation and Control, Changchun 130025)
出处
《汽车工程》
EI
CSCD
北大核心
2019年第10期1221-1227,共7页
Automotive Engineering
基金
国家科技支撑计划项目(2011BAG03B01)资助
关键词
波纹夹芯板
聚氨酯泡沫
拓扑优化
前车门外板
corrugated sandwich panel
polyurethane foam
topology optimization
front door outer panel
