Optimization of Suspension System of Sport Car in Three Dimensional Reactions Space

Suspension system as one of the most important key elements of vehicle has always been considered by research centres and auto makers over the world. This is of higher importance when it comes to sports cars which work within especially sensitive conditions and their performances may be affected adversely even by the smallest defects. This study investigates optimization of effective handling parameters of a sport car with three optimization indices covering racetrack at the shortest possible time. For this purpose, a sport car model simulated in ADAMS/Car software has been used and all test steps have been implemented in this environment. To reach optimum solution in different racetrack conditions, Pareto solution set optimization method was used in which optimization indices have been examined covering distance in standard constant radius test with three different radii. Implementing these experiments at different levels of optimization parameters, all solution sets were collected in a three dimensional diagram called performance space whose coordinates axes are optimization indices values; then using LP norm idea, possible optimum solutions were selected among other ones. In order to find optimum solution in a special racetrack, a new idea was proposed through which weighted coefficients related to optimization indices for a special racetrack were determined and optimum solutions appropriate for that track were selected from Pareto solution set.