A full vehicle model of the RTV is developed in MADYMO including steering, tire and suspension. The suspension characteristics were validated using experimental accelerations measured over bumps. A torque controller is simulated to maintain set speed of the RTV in simulations. The model is used to predict rollover limits using Slowly Increasing Steer, J-Turn, and Road Edge Recovery maneuvers. The rollover limits with three different loading states, RTV without passengers, RTV with unrestrained passengers, and the RTV with restrained passengers have been studied. Comparison with other commercial vehicles indicates that the rollover limiting speed of the RTV in dynamic maneuvers is low.
Keywords:
RTV, Rollover, Slowly Increasing Steer, J-Turn and Road Edge Recovery