计及静水压力影响的加筋圆柱壳塑性损伤程度预报

PDF(1014 KB)

振动与冲击 ›› 2014, Vol. 33 ›› Issue (16) : 126-129.

论文

计及静水压力影响的加筋圆柱壳塑性损伤程度预报

杨棣1，汪玉2，姚熊亮1，王军1

作者信息 +

The prediction of plastic damage degree of stiffened cylindrical shell considering of hydrostatic pressure

YANG Di 1，WANG Yu 2，YAO Xiong-liang 1，WANG Jun 1

Author information +

文章历史 +

摘要

针对潜艇在水下爆炸载荷作用下各部位受损程度不同，选局部典型舱段结构并将其简化成两端刚固的理想刚塑性加筋圆柱壳动力学模型。用动量守恒原理忽略圆柱壳轴向力作用，获得新型快速计及静水压力作用的加筋圆柱壳典型舱段典型位置塑性大变形理论计算方法。将理论计算结果与有限元仿真及实验结果进行对比，证明此动力学模型能对计及静水压力时不同冲击波作用的加筋圆柱壳结构动塑性损伤程度进行预报。

Abstract

In underwater explosion, the damage level of various structures of submarines is different. Local representative compartment structure of submarine was simplified as a perfectly rigid-plastic stiffened cylindrical shell mechanics model fixed on both ends. On the basis of the principle of momentum conservation, and ignoring the axial force of cylindrical shell, a new and fast theoretical calculation method for the large plastic deformation in the typical location of stiffened cylindrical shells has been got, taking account of the hydrostatic pressure. At last, combining the data of finite element software and experiment, the dynamic plastic response of stiffened cylindrical shell under the combination of underwater explosion load and hydrostatic pressure has been simulated, and the results of theoretical calculation agree well with the finite element simulation results. Combined with finite element software and the existing experimental data, the results of theoretical calculation and finite element simulation and experiment results were compared, and it’s proved that dynamic damage degree can be forecasted by the stiffened cylindrical shell dynamic model taking account of hydrostatic pressure which is under shock wave.

导出引用

杨棣;汪玉;姚熊亮;王军. 计及静水压力影响的加筋圆柱壳塑性损伤程度预报[J]. 振动与冲击, 2014, 33(16): 126-129

YANG Di;WANG Yu;YAO Xiong-liang;WANG Jun . The prediction of plastic damage degree of stiffened cylindrical shell considering of hydrostatic pressure[J]. Journal of Vibration and Shock, 2014, 33(16): 126-129