ALE方法模拟爆炸载荷作用下球壳反直观行为

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (6) : 93-96.

论文

ALE方法模拟爆炸载荷作用下球壳反直观行为

吴桂英;周稳;李鑫

作者信息 +

Simulation on the anomalous response ofspherical shell subjected to blast loading by ALE

Wu Guiying; Zhou Wen; Li Xin

Author information +

文章历史 +

摘要

本文利用任意拉格朗日与欧拉（ALE）方法，模拟了球壳在爆炸载荷作用下的动力反直观行为，得到了球壳中点位移时程曲线以及最终变形模式等动力响应。在研究中，考虑了材料的应变率效应，并对球壳的矢高和厚度对其反直观行为的影响进行了参数分析。结果表明，只有炸药距球壳距离在特定范围内，球壳才能发生反直观行为；当炸药当量一定时，球壳发生反直观行为的爆心距区域段随球壳矢高增加而减少，矢跨比大于一定值后，将不会发生反直观行为

Abstract

The anomalous response of spherical shell subjected to blast loading is studied in this paper. The spherical shell midpoint displacement-time curve and the final deformation pattern are got by numerical analyses. The effect of strain rate has been taken into account for the numerical analyses in this research., the parameters with the effect of the rise of arch and thickness to the anomalous response is analyzed. The results show that only explosives in particular distance from spherical shell, there exists anomalous response. When the explosive charge is constant, the region for anomalous response distance will decreased with rise of arch increase. The anomalous response will not appear when rises- span ratio over a certain value

导出引用

吴桂英;周稳;李鑫. ALE方法模拟爆炸载荷作用下球壳反直观行为[J]. 振动与冲击, 2011, 30(6): 93-96

Wu Guiying;Zhou Wen;Li Xin. Simulation on the anomalous response ofspherical shell subjected to blast loading by ALE[J]. Journal of Vibration and Shock, 2011, 30(6): 93-96