Optimization Of Suspension And Simulation Of Vehicle Ride Comfort Based On Virtual-prototype-technology

The ride comfort is required more and more strictly with the improvement of our living standard. Ride comfort has become an important performance index by which the vehicle succeeds more easily in the competition.The paper summarizes the developing process and trend of ride comfort analysis with virtual prototype technology, and the function and compute method of ADAMS are also introduced. Applying the virtual prototype technology, a whole multi-body model which includes body,suspensions,steering system,chair system and tires is created with ADAMS tools. A stochastic road which adapt to ADAMS is created by road roughness theory and VB software.The kinematics characteristics and rules of front suspensions are analyzed in this paper. Using the method of flexible multi-body dynamics, the rigid-flexible model of front suspensions is established by flexing the low arm with ADAMS and ANSYS software. Several important suspension alignment parameters are optimized and reach their ideal values at the same time by the optimized design method.In the end, on the base of optimized suspensions, the writer analyzes the vehicle's ride comfort and puts the results into the program which produced with C to evaluate vehicle's ride comfort objectively. At last some factors which influence the vehicle'ride comfort are discussed.The whole research work concentrates on the exploration and application of virtual design and analysis, and assists on the computer program. We have basically achieved the goal--analyzing essential performances of the vehicle on computer. This is of great significance to the reduction of time and cost of design and the increasing of product quality in the process of vehicle design.