The Analysis And Optimization Of Automobile Suspension Basing On Rigid-flexible Coupling Model

As the road can’t be absolutely flat, wheels tend to be given the impact of vertical reaction from the road. If driving with a high speed on the rough road surface, the impact will become destructive. Therefore, the study of suspension structure and parameters to reduce the influence of the frame or body by the uneven road surface is of great significance for improving the ride comfort performance.Using MSC. ADAMS and the finite element software Hyperworks, the paper establish two vehicle dynamic model with two kinds of rigid-flexible coupling suspension system. One of them is made by MNF (modal neutral file) from the finite element software and the other one is created by the non-linear beam through MSCADAMS. Then, the ride comfort simulations are run under three kinds of stochastic uneven road at different speeds, while comparing the results of two different models. The analysis indicates that the former model is more accurate, In order to improve the ride comfort performance of the vehicle model, using the method of design of experiments (DOE) and response surface methodology on ADAMS/Insight to optimize the stiffness coefficient and damping parameters of front and rear suspensions.