汽车控制臂衬套在整车工况下的有限元仿真

FINITE ELEMENT SIMULATION OF RUBBER BUSHING OF AUTOMOBILE CONTROL ARM IN UNDER FULL VEHICLE LOADING CONDITION

汽车控制臂衬套对汽车的操控性和舒适性都有很大影响,分析橡胶臂衬套在整车载荷中的变形规律对于产品设计和验收有很大意义。该文首先分析了控制臂衬套在整车中的受力特点;然后进行了橡胶部件的力学性能实验,确定了材料模型和参数;对控制臂衬套在球头销处承受整车x向和y向载荷的工况进行了仿真。结果表明控制臂衬套在该文安装方式下,整车x向力下后衬套的变形接近K1方向;在整车y向载荷下,后衬套变形可以忽略,载荷主要由前衬套承担。该文对衬套刚度设计和台架疲劳寿命实验有指导意义。

The rubber bushing in the control arm（CA） of an automobile suspension has a significant influence on vehicle controllability and comfort. The analysis for the deformation behavior of the rubber bushing is important for product design and verification. The load on rubber busing in a full vehicle is analyzed. Then, a rubber material test is performed to identify the material parameters. Finally, the control arm subjected to the load in the global x and y directions is simulated. The results show that the deformation of the back rubber bushing under the global x directional load is close to the K1 direction. Under the global y directional load, the deformation of the back rubber bushing can be neglected and the load is mainly bared by the front rubber bushing. This study may provide a guidance for the stiffness design and fatigue test on rubber bushing.