Research on Vibration and Noise of SUV Chassis Suspension System

In the chassis system of modern automobiles, the suspension is used as the connecting medium between the wheels and the body, which can produce relative elastic motion between the two, and transmit the force and moment between the two, and alleviate the impact transmitted from the road Load to ensure smooth and stable driving of the car. Automotive NVH technology is one of the important performance indicators for Hyundai Motor's research and development, and vibration and noise are the two most important indicators in NVH performance research. When the car is driving, the road surface excitation is transmitted through the suspension system and acts on the body system to generate noise. The inherent characteristics of the chassis suspension system have an important influence on the vehicle vibration and noise problems. In this paper, the vehicle's vibration and noise research is carried out on the chassis suspension system of a certain SUV, the finite element modeling of the suspension system's shock absorber is carried out, and the finite element modal analysis is carried out.