Finite element simulation of rubber bushing of automobile control arm in under full vehicle loading condition

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.