Abstract
To utilize urethane foam's characteristics well for seat's ride-comfort, we've thought of making a better shape of pad's back face. To verify its effects, in using both of measuring with actual pieces and FEM analysis, we paid special attention to urethane foam's inner stress status. We consider relationship between urethane foam's inner stress and seat's ride-comfort, adding to results of experimenting with test pieces simulating conditions, which generates inner-stress.
