正碰, 车身加速度, 碰撞性能图谱, 后悬

For the situation of significantly different results of frontal impact tests of the same vehicle model with one luxurious car and one basal car, by applying the finite element simulation technology, crash performance was mapped after time decomposition, space decomposition and crash force decomposition. The dynamic analysis of the sub-system consisting of rear suspension assembly was carried out for the causation. The results show that for the vehicle model of front-mounted engine, rear-mounted drive, chassis has an important contribution of collision force transmission. The multi-link rear suspension of the luxurious car has a greater longitudinal stiffness than leaf spring rear suspension of the basal car, which causes a higher acceleration markedly. The corresponding solution is educed after the analysis.