【摘要】 本文在理论上和实验上对充满水的封闭圆柱壳,受轴向冲击荷载作用动力塑性失稳进行了研究,其结果与内空圆柱壳。相比:塑性的屈曲波形是以轴对称为主;波数略有减少;第二临界速度值有明显提高,理论计算和实验结果基本一致。更多还原

【Abstract】 The plastic instability of water-filled cylindrical tubes is investigated both experimentally and theoretically. T he concept of imperfection amplification is used to get the plastic buckling wave number. The strain rate reversion is used to determine the critical velocity that causes the development of large or asymmetric buckling deformation. It is called the second critical velocity here. The results are compared to the previous ones on empty tubes. It shows that the water-filled case produces symmetric and uniform deformation instead of tending to asymmetric and large local deformation in the previous case. The wave number decreases a little while the second critical velocity increases.更多还原