In engineering application of explosion welding of large-sized Ti/steel plates, welding defects are always found in the particular area of plate's boundary. In order to solve this problem, the dynamic process of explosion welding is investigated by the numerical simulation. Folding deformation can be discovered during the explosion welding based on the research on the morphological changes of the flyer plate at different times. The calculation results are in good agreement with the experiments. The studies show that folding deformation is a crucial problem which should be noticed in the process of explosive welding. The reasons for the folding deformation are discussed in the paper. The conclusion can provide a reference for the development of explosion welding technology.%为了解决大面积钛钢板爆炸焊接工程应用中复合板边界区的局部脱焊现象,利用动力非线性数值模拟,考察了大幅板爆炸焊接的动态过程,通过分析爆焊过程中不同时刻复板飞行姿态,发现了在大幅板爆炸焊接过程中存在褶皱变形,发生位置与实际工程中大幅板的脱焊位置一致,指出应特别注意复板的褶皱变形,并解释了褶皱变形出现的原因,为爆炸焊接工艺技术的改进和发展提供了参考.
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