This study investigates the dynamic linear, nonlinear responses, and shock damage of two kinds of submerged cylindrical shell models exposed to underwater spherical trinitrotoluene (TNT) charge explosions in a circular lake. Two endplates and a middle plate are mounted on the cylindrical shells to provide support and create two enclosed spaces. The two kinds of cylindrical shell models are unfilled and main hull sand-filled, respectively. Fifteen different tests are carried out according to changing the TNT explosive weights of 1 kg and 2 kg, standoff distances ranging from 3 m to 0.3 m, and two explosion positions, and the measured experimental results are compared with each other. Detailed discussions on the experimental results show that the dynamic responses and damage modes are much different, and the main hull sand-filled cylindrical shell is more difficult to be damaged by the shock wave loading than the unfilled model. The edge cracks are mainly observed at the instrument hull of the main hull sand-filled model, but surface tearing and cracks take place both on the main and instrumental hulls of the unfilled model, respectively.
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February 2011
Ocean Engineering
Experimental Study on Dynamic Response and Shock Damage of Cylindrical Shell Structures Subjected to Underwater Explosion
Liang-Jun Li,
Liang-Jun Li
State Key Laboratory of Mechanical System and Vibration,
e-mail: ljli@sjtu.edu.cn
Shanghai Jiao Tong University
, Shanghai 200240, China
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Wei-Kang Jiang,
Wei-Kang Jiang
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
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Yan-Hui Ai
Yan-Hui Ai
No. 710 Institute of China Ship Heavy Industry Group Corporation
, Yichang 443004, China
Search for other works by this author on:
Liang-Jun Li
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, Chinae-mail: ljli@sjtu.edu.cn
Wei-Kang Jiang
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University
, Shanghai 200240, China
Yan-Hui Ai
No. 710 Institute of China Ship Heavy Industry Group Corporation
, Yichang 443004, ChinaJ. Offshore Mech. Arct. Eng. Feb 2011, 133(1): 011102 (9 pages)
Published Online: November 4, 2010
Article history
Received:
November 11, 2009
Revised:
February 1, 2010
Online:
November 4, 2010
Published:
November 4, 2010
Citation
Li, L., Jiang, W., and Ai, Y. (November 4, 2010). "Experimental Study on Dynamic Response and Shock Damage of Cylindrical Shell Structures Subjected to Underwater Explosion." ASME. J. Offshore Mech. Arct. Eng. February 2011; 133(1): 011102. https://doi.org/10.1115/1.4001441
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