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
1.College of Sciences, Heilongjiang University of Science and Technology, Harbin 150022；
2. Hypervelocity Impact Research Center, HIT Aerospace Laboratory, Harbin 150080
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.
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. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(13): 12-17.
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