The Application Of Multibody Kinematics In Double-wishbone Suspension System

The suspension system on a automobile will effect the operating stability,the comfort,the turning ability,the life of its tire etc. The double-wishbone suspension is one of the independent suspensions applied broadly.The double-wishbone suspension is complex space mechanism with many loops and complicated movement. The parameters of double-wishbone suspension are very complicated. These all make it difficult to analyze the motion of the double-wishbone suspension. An analyzing and designing method based on multibody system model is put forward in this study.The multibody dynamics has developed into an advanced subject on analytic geometry and motion analysis in these years. The Maximum Coordinates Method is applied in this study. Euler parameters and Cartesian coordinate are used to define the space characters of the double-wishbone suspension system.Compared with conventional methods,the method applied in this research is simpler,exacter and has a better all-purpose ability.The software designed during the study can do kinematics simulation optimized design of the double-wishbone suspension system.In some countries,the multibody system dynamics is very advanced and applied in extensive fields. At home,some scholar did some elementary work on kinematics on he double-wishbone suspension system. But the research is elementary because of the conditions at that time. Using the Maximum Coordinates Method to do kinematics simulation of the double-wishbone suspension system is the first time.