840 Vehicle Rollover Simulation with Simple Model

Rollover of automobile causes severe damage to both vehicles and passengers, therefore prevention and dynamic analysis of it have been important issue in vehicle dynamics. Though linear-bicycle model is often used for analysis, it is not suitable for simulating non-linear region behavior such as rollover. In this study, 4-wheel model with non-linear tire characteristics is used for the rollover simulation. Then, with the result of the numerical simulation, the new index for "Anti-Rollover" performance is presented. Existing index, such as SSF, deals only with static characteristics of rollover, so the index is expected to be a new one from the view point of dynamic analysis of rollover.