One-dimensional (1D) analytical model and finite element (FE) simulation are employed to investigate the shock mitigation capability of stepwise graded cellular claddings to underwater blast. To build the analytical model, two types of core configurations are considered: (i) “low → high” with the weakest layer being placed at the impinged end and (ii) the “high → low” configuration. Details of fluid–structure interaction (FSI), response of the graded cladding, and the cavitation phenomenon are thoroughly studied. Then the fidelity of the analytical model is assessed by FE simulations. The results reveal that the analytical model can accurately predict the whole process of such problem. Subsequently, the validated analytical models are used to analyze the influence of density gradient on the shock mitigation capability of cellular claddings in terms of the densification loading, the partial impulse imparted to the cladding, and the work done on the cladding by the external impulse. The results illustrate that the graded claddings perform better than the equivalent uniform case. Compared with the negative density gradient case, the “low → high” configuration with weaker layer being placed at the impinged end is preferable since lower force is transmitted to the protected structure.
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April 2017
Research-Article
The Underwater Blast Resistance of Sacrificial Claddings With Stepwise Graded Cellular Cores
Caiyu Yin,
Caiyu Yin
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yincaiyu@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yincaiyu@sjtu.edu.cn
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Zeyu Jin,
Zeyu Jin
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: jinzeyu@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: jinzeyu@sjtu.edu.cn
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Yong Chen,
Yong Chen
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: chenyong@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: chenyong@sjtu.edu.cn
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Hongxing Hua
Hongxing Hua
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: hhx@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: hhx@sjtu.edu.cn
Search for other works by this author on:
Caiyu Yin
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yincaiyu@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: yincaiyu@sjtu.edu.cn
Zeyu Jin
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: jinzeyu@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: jinzeyu@sjtu.edu.cn
Yong Chen
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: chenyong@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: chenyong@sjtu.edu.cn
Hongxing Hua
State Key Laboratory of Mechanical System and Vibration,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: hhx@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: hhx@sjtu.edu.cn
1Corresponding author.
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received July 6, 2016; final manuscript received September 24, 2016; published online November 29, 2016. Assoc. Editor: Jonas W. Ringsberg.
J. Offshore Mech. Arct. Eng. Apr 2017, 139(2): 021602 (10 pages)
Published Online: November 29, 2016
Article history
Received:
July 6, 2016
Revised:
September 24, 2016
Citation
Yin, C., Jin, Z., Chen, Y., and Hua, H. (November 29, 2016). "The Underwater Blast Resistance of Sacrificial Claddings With Stepwise Graded Cellular Cores." ASME. J. Offshore Mech. Arct. Eng. April 2017; 139(2): 021602. https://doi.org/10.1115/1.4034922
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