Abstract: The vibration problem of cylinder washing machine has always been the focus of product improvement, and the suspension system is a common vibration reduction measure of cylinder washing machine. Taking the suspension system of cylinder washing machine as the research object, firstly, the virtual prototype model of suspension system is established by ADAMS, and the simulation results of virtual prototype are verified and analyzed. The amplitude is basically consistent with the experimental results at the stable speed stage, which shows the effectiveness of the simulation model. Then, based on Box-Benhnken’s central composite experimental design principle, the orthogonal experimental table is designed. Through variance analysis, it is determined that the stiffness coefficient of spring, damping coefficient of damper, mass of upper counterweight and mass of lower counterweight have significant influence on the amplitude of suspension system. Finally, multiple regression analysis and response surface method are used to optimize the optimal structure parameter combination. The optimized suspension system amplitude decreases by 14.8%, which shows the effectiveness of this optimization method.

Key words: Cylinder washing machine, Suspension system, ADAMS, Response surface method