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提出了一种计算受冲薄壁结构动力效应的显式有限元方法．采用退化四节点亮单元及快速可靠的接触搜寻法，运用基于Ｐｒａｎｄｔｌ－Ｒｅｕｓｓ塑性流动增量理论的等向强化弹塑性Ｓｙｍｏｎｄｓ应变率材料模型与合适的应力回映方法，可以准确地模拟受冲薄壁结构的动态过程．文中实例表明：已被广泛采用的Ｒｅｉｄ与Ｒｅｄｄｙ的针对薄壁圆管横向压缩中某些特殊情况而作的变形模式假设并不具有广泛适应性；对应变率敏感材料，应变率效应不仅影响受冲薄壁结构的变形特性，也影响其变形模式；此外，冲击过程中的惯性效应不容忽视．
An explicit finite element method for calculating the dynamic effect of the impingement thin-walled structure is proposed. By using the degenerate four-node light unit and the fast and reliable contact searching method, the isotropic strengthening elastic-plastic Symonds strain rate material model based on the Prandtl-Reuss plastic flow increment theory and the appropriate stress-mapping method can accurately simulate impulse Thin-walled structure of the dynamic process. The examples in this paper show that the widely used Reid and Reddy’s assumption of deformation mode for some special cases of thin-walled circular tube lateral compression does not have extensive adaptability. For strain-sensitive materials, the strain rate effect not only affects the thickness Deformation characteristics of the wall structure, but also affect the deformation mode; In addition, the impact of the inertia effect can not be ignored.