Flexible multibody system dynamics predicting method of high-speed vehicle handling

In order to evaluate the handling of high-speed vehicle, taking the vehicle with a standard structure as its object of study, and using flexible multibody system dynamics method, this paper founded the subsystem models of steering, suspension, tire, body and the dynamics analysis model of automotive handling and stability based on ADAMS software platform. As to the flexible part in the models, the finite element analysis software, ANSYS, was used to process model analysis, and the ADAMS/Flex module was employed to amalgamate the module deformation into the kinematic and dynamics simulation. The major assessment target of steering wheel torque input was obtained by the simulation of steering wheel center location. The error of simulating data compared with the testing data is less then 10%. So in the vehicle design phase, the flexible multibody model can be used to predict the handling of high-speed vehicle, and substitute the sample test.