扭力梁悬架有限元模态分析中的橡胶衬套动刚度赋值方法  

Rubber Bushings Dynamic Stiffness Value Assignment Method in Finite Element Modal Analysis of Torsion Beam Suspension

作　　者：石月奎[1] 李洪亮[1] 王海洋[1] 

机构地区：[1]中国汽车技术研究中心,天津300300

出　　处：《汽车技术》2016年第6期15-18,共4页Automobile Technology

基　　金：天津市重点项目(14TXSYJC00457)

摘　　要：依托典型车型扭力梁悬架的有限元模态分析结果,在对悬架边界条件合理简化的前提下,针对悬架橡胶衬套单元模型在分析模型构建中的动刚度赋值问题开展研究,提出了一种"分频迭代"的处理方法。与试验模态分析结果对比,采用"分频迭代"方法进行处理,可将模态频率的计算误差控制在10%以内,且相应的模态振型一致性良好,频率、振型的一致性均优于传统的静刚度当量方法,表明了所提方法的有效性与合理性。Based on finite element modal analysis of typical automobile torsion beam suspension, we investigate dynamic stiffness value assignment of suspension rubber bushing model in the construction of analysis model, under the prerequisite of rational simplification of suspension boundary conditions, and propose a ＂Crossover iteration＂ method. Compared with test modal analysis results, the ＂Cross iteration＂ method can control the error of modal frequency calculation within 10%, and the corresponding modal shape has good consistency, the consistency of both frequency and shape are better than the traditional static stiffness equivalent method, proving effectiveness and rationality of the proposed method.

关 键 词：橡胶衬套 动刚度特性 扭力梁悬架 有限元分析 

分 类 号：U462.1[机械工程—车辆工程]