Based On The Dynamic Simulation Analysis Of A SUV Car Suspension Matching Design

In recent years,as people’s demand for cars and purchasing power gradually increased,the car has entered in thousands of households,and the requirements of people that automobile comfort and operation stability,security and other requirements also in ascension.But because of China’s automobile technology development time is short,technology is not perfect,database is not enough and which lead to the development of the automobile chassis performance information is incomplete.Designed to improve the chassis suspension of matching performance is critical,needs the accumulation of experience,and constantly study.This article is based on a certain SUV chassis suspension matching design case,using dynamic simulation analysis to means for suspension of matching design method in detail.The natural frequencies of the main matching parameters of suspension,steering,beating roll Angle stiffness and shock absorber damping coefficient.Through the above parameters reasonable matching can make sense of pitch,under steer,skew degrees up to par.Thus to meet the performance.The Hypermesh software can generate flexible MNF files,and then use the Adams software to align with the Hypermesh software to enable the modeling of rigid coupling.Combined with the two software and the car parameters which provided by maker that can multibody dynamics model,and then the dynamic simulation of the chassis parameters and some curve of K&C test bench of real vehicle parameters for fitting curve comparison to verify the correctness of the model.In automobile reverse design,makers will choose a car as the compared car,when the suspension parameters matching,need to get suspension parameters of the compared car,and then make the compared car suspension parameters as the design reference target of vehicle suspension matching design.Based on the model of dynamic simulation and the theoretical knowledge,this paper has completed the matching design of suspension frame,and the design result conforms to the design objective.