Research on scaling law of boundary tearing damage of stiffened plates for ship subjected to underwater explosion load
GAO Peng1,YAN Ming1,ZHANG Quan2,DU Zhipeng3
1.School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, China;
2.Science and Technology on Reactor System Design Technology Laboratory of NPIC, Chengdu 610213, China;
3.Naval Research Academy, Beijing 100161, China
Abstract:In order to analyze the deformation and damage of stiffened plate for ship subjected to underwater explosion shock wave load, the scaling law of boundary tearing damage of the plate under uniform load was studied by using simulation and data fitting methods. Firstly, we combine theory and data analysis to find that the initial response velocity is closely related to the failure mode, and can clearly describe the damage mode of the stiffened plate. At the same time, the simulation results show that the fracture strain, plate thickness and length width ratio are the important parameters that affect the boundary tear of stiffened plate. Finally, a fitting function is established to determine the tearing damage of stiffened plate, and the effectiveness of the function is verified by a warship damage case. The results show that the method of constructing the tearing damage criterion of the plate boundary based on the initial response velocity and the dimensionless number considering the parameters such as the fracture strain is feasible, which provides a reference for the scaling research on the damage of the ship’s stiffened plate.
高鹏1,闫明1,张权2,杜志鹏3. 水下爆炸载荷下舰船板架边界撕裂损伤相似准数研究[J]. 振动与冲击, 2024, 43(4): 38-44.
GAO Peng1,YAN Ming1,ZHANG Quan2,DU Zhipeng3. Research on scaling law of boundary tearing damage of stiffened plates for ship subjected to underwater explosion load. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(4): 38-44.
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