The Effects of Important Parameters on Vehicle Rollover with Sensitivity Analysis

The goal of this research was to find the effects of the most important design parameters on passenger cars during “Untripped On-Road Rollover” maneuvers. This work involved studies of vehicle behavior under severe maneuvering conditions include rollover, which was done by using a computer simulation.

In order to get a good insight into the effects of design parameters and sensitivity of vehicle rollover to each parameter, a 16 degree of freedom vehicle dynamic model with Pacejka tire model and necessary submodels were developed. Validation was done using standard test results for a passenger car. In order to simulate severe maneuvers, some of suggested test procedures of related organizations were studied. Finally, the J-Turn and Obstacle Avoidance tests were selected. According to the results of this study, some design comments for better vehicle on-road rollover stability were specified.