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1·The results show that the displacements of the procumbent circular tube under lateral impact are mainly local depression around the impact point and the global deformations can be neglected.

实验研究与数值模拟结果表明，砂垫平铺圆管的横向冲击变形主要为冲击点局部凹陷，结构的整体弯曲变形可以忽略。