車両(四輪車)の二次元運動 : 車輪の浮き上がりを考慮した場合

This paper deals with the pre- and postimpact motion of vehicles. We have already proposed an analytical method for motion analysis of four-wheel vehicles, solving the wheel loads as unknown values. However, it was not considered in the previous paper that the wheels may be lifted from the ground due to such effects as impact force, sudden braking or handling. We take floating of the wheels into consideration in this work. We determined the state of contact between the road and the wheels by checking the displacements of the springs of suspensions at each time step of calculation. Finally, we show several numerical results and discuss them.