Analysis And Optimization Of The Guidance Organization Of Double Wisbone Suspension Systerm

The virtual prototypes technology in mechanical engineering is often referred to as dynamic simulation. The core is the technology of kinematics and dynamic simulation using CAD, FEA, Controls and Optimization tools.The applications of virtual prototype technology help the designers to better understand the characteristic of suspension, ride comfort, controllability,stability and brake performance, so that they can judge if the performances of the vehicle meet the requirements. And we can avoid the possible delays of design and the waste of design outlay which are resulted from the redesign and the duplicate trial-produce of physical prototype because of the shortcoming arefound in test of the physical prototype.Automotive suspension research includes two areas. One is suspension system dynamics which mainly study the spring and damper characteristics, the other is suspension system kinematics which mainly studies the orientation machine characteristics. When considering the influences of the elasticity joint components the suspension system kinematics is called suspension system kinematics and elasticity kinematics. This article is specially to study the evaluation parameters and testing method for the kinematics and elasticity kinematics characteristics of vehicle independent suspension system.In chapter one, we itemized the growing history and future trend of the suspension systerm, the influence of the front wheel alignment parameters to handing stability. We reviewed the relationship of handing stability and the drive safety, the growing history of handing stability research, the evaluation of handing stability. and a brief described the research content and significance.Chapter two systematically introduces the mechanical theory of Multi-body System Dynamics related with the software of ADAMS. First, the chapter briefly introduces the software and its components then discusses its analysis and calculate methodsIn the third chapter, according to the construction and parameters of a car, the article builds the double wishbone-torsion spring independent front suspension and steering system simulation model with the ADAMS/CAR software . At the same time ,the article point out the rationality of kinematics and elasticity kinematics characteristics comparison analysis This model acts as the testing-validation models for the vehicle independent suspension kinematics and elasticity kinematics characteristics evaluation parameters and testing method mentioned in the third chapter of the article.In chapter 4, the article elaborates on the vehicle independent.Suspension kinematics and elasticity kinematics characteristics evaluation parameters and testing method. Here evaluation parameters and test methods was respectively discussed. At the evaluation parameters part, the article point out 20 suspension parameters to evaluate the vehicle independent suspension kinematics and elasticity kinematics characteristics, and give the exact definitions of these 20parameters, at the same time the article endeavors to discuss the changeable characteristics of these parameters and their influences to the vehicle handling performance.At the evaluation method part, the article point out 5 computer simulation test methods to evaluate independent suspension kinematics characteristics and more simulation test methods method to evaluate independent suspension elasticity kinematics characteristics. Finally the article introduced test-bed testing methods to evaluate independent suspension kinematics and elasticity kinematics characteristics.The fifth chapter is the full text summary part , mainly recover research work, the correlation conclusion and the significance of this this article...