基于Udwadia-Kalaba理论的悬架零部件动态载荷计算方法  

A Method for Calculating Dynamic Load of Suspension Part Based on Udwadia-Kalaba Theory

作　　者：胡三宝[1,2] 吴攀 王潮[1,2] HU Sanbao;WU Pan;WANG Chao(Hubei Key Laboratory of Advanced Technology of Automotive Components,Wuhan University of Technology,Wuhan 430070,China;Hubei Collaborative Center for Automotive Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学现代汽车零部件技术湖北省重点实验室,湖北武汉430070 [2]汽车零部件技术湖北省协同创新中心,湖北武汉430070

出　　处：《湖南大学学报（自然科学版）》2019年第4期1-9,共9页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51305314)~~

摘　　要：以轮心六分力作为输入,研究了基于Udwadia-Kalaba理论的悬架零部件动态载荷计算方法.以五连杆后悬架作为建模对象,建立了悬架系统动力学模型,并将系统总约束力进行分解,得到各部件所受动态载荷的解析表达式.与传统拉格朗日建模方法相比,该方法无需借助拉格朗日乘子,降低了建模复杂程度.为验证方法的正确性,将数值计算结果与传统建模软件Adams/Car仿真结果进行对比,结果表明:该方法准确、高效,计算所得动态载荷与Adams/Car仿真结果均具有较好的吻合性;最后将该方法应用到实车试验中,进行了某SUV后悬架的动态载荷预测.Based on Udwadia-Kalaba theory,a method for calculating the dynamic load of suspension part was studied by taking the six-component force of wheel center as the input.Taking the five-rod rear suspension as the modeling object,the dynamic model of the suspension system was established,and the analytical expression of the load at each part was obtained with the decomposition of the total binding force.Compared with the traditional Lagrange modeling method,the method does not need the Lagrange multiplier and reduces the complexity of modeling.In order to verify the correctness of the method,the numerical results were compared with the simulation results of the traditional modeling software Adams/Car.The analysis result shows that the proposed method is accurate and efficient,and the calculated dynamic loads are in good agreement with the Adams/Car simulation results.Finally,the method was applied to the actual vehicle test,and the load prediction for the rear suspension of a SUV was carried out.

关 键 词：悬架零部件 Udwadia-Kalaba理论 六分力 动态载荷 载荷预测 

分 类 号：TH242[机械工程—机械制造及自动化]