Design And Analysis Of Front Independent Suspension Of Light Duty Vehicle

The method of independent suspension design is studied in detail and the relation among suspension movement, front wheel alignment parameters and tyre wear is analysed in this paper.Firstly, the design methods of main components of double-links independent suspension, including shock absorber' choosing, antiroll bar's calculation, torque bar spring's design, are presented and movement of double-links independent suspension is analysed. So a software which is used to design and analyse independent suspension is programmed. Meanwhile, the experiment to verify the result is made with the equipment of the front wheel alignment.Then, an optimal design to minimize tyre wear is performed, which brings forward the way to reduce tyre wear through optimal choosing and modulating original deposition of double-link independent suspension and optimizing the cut point of track rodin. Furthermore, the method of orthogonal experiment is used to analyse the effect that the structure and fix parameters of double-link independent suspension have on the suspension performance and tyre wear. And the most important factor and the second important factor are confirmed.Later, the relationship between front wheel alignment parameters and tire wear is analysed by studying the tire model. Tyre wear power taken as the evaluation parameter, tyre wear is studied under the situation of tyre side slip, lengthways slip and side-lengthways slip respective , and the calculation model of tyre wear is built by use of the brush tyre model. Then the math model of the relationship between the front wheel aligning parameters and tyre wear is obtained by taking the side slip angle of tyre as medium parameter, and the computer simulation is made. It can be used for optimal design of suspension so as to reduce the effect on tyre wear and to improve running performance and utilizing economy of vehicle.