超高速撞击压力容器后壁损伤实验及建模研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (13) : 12-17.

论文

盖芳芳 1，才源 2，郝俊才 1，乔牧 1

作者信息 +

Experimental and modeling investigation into damage of pressure vessels’ rear wall produced by hypervelocity impact on pressure vessels

GAI Fang-fang 1 CAI Yuan 2 HAO Jun-cai 1 QIAO Mu 1

Author information +

文章历史 +

摘要

采用地面模拟撞击实验与理论分析相结合的手段，对球形弹丸超高速正撞击圆柱形充气压力容器后壁损伤问题进行研究。首先应用二级轻气炮进行压力容器超高速撞击实验，获得了容器后壁损伤特性；然后基于线弹性断裂力学、弹性力学理论，在弹丸不同破碎模式下，将碎片云及气体冲击波对容器后壁的作用简化为局部均布冲击载荷对固支圆板的作用，建立了容器后壁损伤预报模型，并通过与实验结果的比较，验证了模型的有效性。确定了在碎片云与气体冲击波作用下容器后壁产生穿孔和裂纹的临界条件及尺寸；并在考虑容器壁曲率影响的条件下，获得了容器后壁发生灾难性破坏的临界条件。

Abstract

Ground simulation impact experiment and theoretical analysis method is used for investigate damage characteristic of pressure vessel rear wall by spherical projectiles hypervelocity impact on gas-filled pressure vessels at normal angles. First, experiments of spherical projectiles hypervelocity impact on gas-filled pressure vessels are performed by two stage light gas gun loading technique, the damage characteristic of pressure vessel rear wall is obtained. based on linear-elastic fracture mechanics theory and elastic mechanics theory, simplified model prediction model for damage of pressure vessels is build on different fragmentized patterns of projectiles. In the model the rear wall is assumed to be fixed plate, the debris cloud and gas shock wave is assumed to be uniformly load. To verify the effectiveness of the model through the comparison with experimental results. The critical condition of rear wall perforation and crack, and damage size under the action of debris cloud and gas shock wave is obtained. The critical condition of catastrophic rupture of rear wall in the conditions of considering the curvature effect is obtained.

导出引用

盖芳芳 1，才源 2，郝俊才 1，乔牧 1. 超高速撞击压力容器后壁损伤实验及建模研究[J]. 振动与冲击, 2015, 34(13): 12-17

GAI Fang-fang 1 CAI Yuan 2 HAO Jun-cai 1 QIAO Mu 1. Experimental and modeling investigation into damage of pressure vessels’ rear wall produced by hypervelocity impact on pressure vessels[J]. Journal of Vibration and Shock, 2015, 34(13): 12-17

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