Optimal Design And Simulation Analysis For Vehicle Power-train Mount

As the bridge of power-train and vehicle body，and vehicle power-train is one ofthe main source of vibration excitation of vehicle， mount system also is theimportant component to vibration isolation. So the stand or fall of vibration isolationperformance of power-train mount system has an significant influence forcomfortableness to the vehicle.The power-train mount system which has favorableisolation performance can obviously improve the NHV performance of the wholevehicle, effectively improve the ride comfort,and corresponding protection powerassembly.Based on the theory of motivation analysis, vibration and optimal design theory,using the dynamics analytical software ADAMS of mechanical system to built mountsystem modeling, simulation analysis and optimization design of the commercialvehicle’s power-train. Firstly, this paper introduces the principle of vibration isolationand related theory. Secondly, through the simplification of the power-train mountcomponents,and established six degrees of freedom mechanical model of power-trainmount system with static and dynamic perspective. Lastly, using ADAMS software toestablished a parameterized model of power-train mount system，Then use the aboveto analyze the intrinsic characteristics of power-train mount system to determine threeelements of the optimal design: variables, constraints and objectives. and make amodal analysis. Then set the power-train mount component s stiffness, location, andthe combination of stiffness and location as variable respectively, aiming at makingoptimization design with energy decoupling. The analysis results show that thevibration isolation performance of powertrain mount system has improved.The research methods which can reduce the risk of design and shorten thedevelopment cycle, has a certain reference value of application.