乘用车轮胎动态冲击的试验与仿真分析-北京大学学报哲学社会科学版.PDFVIP

ISSN 1674-8484 汽车安全与节能学报, 2016 年, 第7 卷 第1 期 05/ 15 CN 11-5904/U J Automotive Safety and Energy, 2016, Vol. 7 No. 1 49 — 54 乘用车轮胎动态冲击的试验与仿真分析 郭建保，孙  晴，刘珍海，胡跃伟，岳国辉，陈现岭  （长城汽车股份有限公司技术中心，河北省汽车工程技术研究中心，保定071000，中国） 摘  要： 乘用车整车碰撞仿真分析中，轮胎仿真精度影响轮胎的变形、姿态及车体响应。为提升轮胎 的仿真精度，该文设计了乘用车轮胎动态冲击试验系统。采用实体与壳单元结合的轮胎建模方法，通 过 Hypermesh 建立动态冲击试验有限元模型，使用LS-Dyna 仿真分析，并与试验对标。用 GB/T 20072-2006 中规定的台车，以10 km/h 的速度对轮胎进行 2 次冲击对比试验。同时验证了对标轮胎 模型对整车碰撞的影响。结果表明：仿真中轮胎变形及冲击特性、台车加速度与试验一致。应用于整 车碰撞中，轮胎姿态、A 柱变形、B 柱加速度与试验一致。因而，乘用车轮胎动态冲击试验系统设 计有效。轮胎建模方法合理。 关键词： 汽车被动安全；轮胎；动态冲击；试验与仿真；刚度；对标分析 U 461.91 A 10.3969/j .issn.1674-8484.2016.01.005 中图分类号： 文献标识码：  DOI: Test and simulation analysis of vehicle tire dynamic impact GUO Jianbao, SUN Qing, Liu Zhenhai, HU Yuewei, YUE Guohui, CHEN Xianling (Great Wall Motors Technology Center, Hebei Auto Engineering Technology Research Center, Baoding 071000, China) Abstract: Tire simulation precision in vehicle crash simulation affects the deformation, pose and body response. A testing system of tire dynamic impact was designed to improve the simulation precision. A tire FE model was established using shell and solid about the dynamic impact testing system by Hypermesh, simulated by LS-DYNA, and benchmarked with test. Two contrast tests were done with an impact velocity of 10 km/h using a trolley specified in GB/T 20072-2006 to impact tire. After benchmarked, it was validated in vehicle. The results show that the tire deformation, impact characteristic, and trolley acceleration are the same as test. Applied in vehicle, the tire gesture, A-pillar deformation, and B-pillar acceleratio