Optimization Design of Suspension Structure Based on Multi-Body Dynamic Analysis

Abstract

Operation stability of vehicles is directly impacted by suspension K&C. Multi-body dynamic CAE analysis and suspension K&C design are two tools for suspension design, which are fundamental both in theory and test. Test and simulation analysis will be conducted to a benchmarking vehicle in the development of a sedan. Geely has established its chassis lab, which is equipped with K&C test equipment, operation stability performance test equipment, and owns subjective appraisers. Testing data can be accumulated by suspension K&C and vehicle operation stability and riding comfort test on competing vehicles and developing vehicles. Through analysis of the test data, a performance comparison of different suspension structures, i.e. McPherson strut, torsion beam, and multi-link, thus suspension structures appropriate for different vehicles of Geely’s platforms are determined. In addition, optimization analysis is conducted to suspension structure and vehicle performance with ADAMS/CAR and CARSIM software to confirm the vehicle performance and system performance.

F2012-G01-015