Study Of The Method In Modeling And Simulation Of Vehicle Ride Comfort

In recent years, with the development of the automotive industry, a large number of new cars'model having appeared in the market. How to reduce cycle time, and should be able to ensure the performance of the new car, it must been solved. Automobile Ride Comfort is key symbol what is used to judge driver and passenger comfort, In the early stage of development, it is the primary issue.The basis of the previous theory of Automobile Ride Comfort analysis, the paper put forward a new method to create mathematical model. In this paper, based on the Finite Element Method what to discrete structural system of Vehicle Random Vibration, and divided into kind units, and derivation of the general matrix formula of the kind units'stiffness and damping. Finally, the total matrix of stiffness and damping. Taken approach of the constraints of forced displacement to establish the structure of the Mathematical Model of Automobile Ride Comfort analysis. In order to prove the method is correct, using of method of manual assembly to create total matrix of stiffness and damping. Writing software procedure modules of the units analysis, the global analysis and constraints processing.Using a way of understood and applied easily by engineer to elaborate the Pseudo Excitation Method theory and method how to application in the Automobile Ride Comfort analysis. Given the specific application of Pseudo Excitation Method in random vibration analysis of automotive, by combined with the modeling method. By compared Pseudo Excitation Method with Fourier Method to illustrate them different characteristics. Verified the equivalence of Pseudo Excitation Method and Fourier Method, and Pseudo Excitation Method better than Fourier analysis method.