考虑片间接触的汽车钢板弹簧动力学建模  

Dynamics Modeling of Vehicle Leaf Spring with Consideration of Inter-leaf Contact

作　　者：席敏[1] 刘桂萍[1] 雷飞[1] 丁飞[1] 

机构地区：[1]湖南大学,汽车车身先进设计制造国家重点实验室,长沙410082

出　　处：《汽车工程》2012年第8期751-755,共5页Automotive Engineering

基　　金：国家杰出青年基金项目(10725208);教育部长江学者与创新团队发展计划项目(531105050037)资助

摘　　要：为提高钢板弹簧的仿真精度,提出了一种考虑片间接触的多片钢板弹簧动力学建模新方法。首先建立钢板弹簧各片的三维有限元模型,并进行模态分析,将所得的各片钢板弹簧的mnf文件导入ADAMS中进行装配,然后采用遗传优化算法反求出钢板弹簧片间接触参数,得到确定参数的钢板弹簧动力学模型,并通过试验验证了该模型的准确性,最后将该方法应用于某重型载货汽车通过凸块的平顺性分析。结果表明,该方法具有较高的建模精度。For improving the simulation accuracy of vehicle leaf spring, a new dynamics modeling method for multi-leaf spring is proposed with consideration of inter-leaf contact. Firstly the 3D FE model for each leaf of spring is set up, and a modal analysis is conducted with all the mnf files generated for each leaf input into ADAMS and assembled. Then the inter-leaf contact parameters are inversely evaluated with genetic optimization algorithm and a leaf spring dynamic model with definite parameters is obtained and its accuracy is verified by tests. Finally the method is applied to a ride comfort analysis for a heavy-duty truck passing over a triangular bump. The results show that the method proposed has a high modeling accuracy.

关 键 词：钢板弹簧 接触分析 动力学模型 平顺性 

分 类 号：U465.1[一般工业技术—材料科学与工程]