考虑到TNT炸药与公共汽车在尺寸上的巨大差异,应用有限元程序AUTODYN提供的REMAP映射技术,建立公共汽车内TNT炸药爆炸的有限元模型,解决汽车有限元模型计算精度和计算时间问题,获得炸药爆炸后车内压力分布云图及典型位置的压力和速度历程曲线.仿真结果为确定人员伤害及汽车损伤程度提供了理论基础. Considering the huge size difference between TNT and public buses, the finite element model of explosive TNT explosions in buses was established by REMAP mapping technology provided by finite element program AUTODYN. The calculation accuracy and calculation time of TNT were solved. The stress and velocity history curves of the pressure distribution in the car and the typical location after the explosions explode.The simulation results provide the theoretical basis for determining the degree of injury and the degree of car damage.