The Application of Virtual Simulation Technology in Studying Vehicle Vibration Characteristics on Random Road

Abstract. This paper think of the car provided by car company as the research object, the filter white noise was used to get some road roughness and create random road excitation, then the entity model of car and four pillar test bench was set up in ADAMS, and next, add random road excitation to the model to carry on the simulation analysis of vibration response and comfort level.So that, the related parameters used to evaluate the car’s vibration performance and vehicle ride comfort were get, and it can provide reliable data to study the automobile comfort. All in all, it can make the car’s design philosophy turn “design--experiment--improved design---replication---redesign “into “design---simulation---experiment”, so the main problems appeared during designing can be solved at the beginning of the design, it is an effective method that shorten the product cycle, reduce production costs, and enhance market competitiveness. 1