The Improvement of Handling Performances through the Sensitivity Analysis Validated by the K&C Test

The purpose of this study was to demonstrate a method to improve the handling performances of a vehicle through the sensitivity and quasi-static analysis validated by the K&C test. The design changes were needed to reduce the understeer tendency of the vehicle. The sensitivities of the hard points for the target suspension parameters, were calculated using SDAP (Suspension Design Analysis Program). The hard points were changed based on these sensitivity values. In order to foresee the handling performances of the changed vehicle, the suspension parameters were calculated using ADAMS/ vehicle. Finally the handling performances of the new designed vehicle were simulated through the full vehicle analysis using ADAMS, compared with those of the original one.