Numerical Simulation and Experiment Research of Lower Arm B

Lower arm B(LAB) is an important part in the vehicle, which bears spring load and damper load or as a stable bar in some cases. Study LAB's dynamic performance will give sight to control noise and vibration in cabin for the vehicle designer, because LAB make a lot of contributions on the suspension assembly which will bring transferred noise and vibration to the cabin. In this paper, the FEA model of LAB is updated ,first, through testing the LAB's dynamic performance, then the modal test is improved further by using the pretest analysis results. At last, the natural frequency, damping of LAB is gained for further study in the suspension assembly.