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Citation:
　Wei Zhang,Wenyong Tang,Nianzhong Chen and Shengkun Zhang.The Effects of Stochastic Characteristics of Materials on the Reliability of a Composite Ship Hull[J].Journal of Marine Science and Application,2011,(1):1-6.
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The Effects of Stochastic Characteristics of Materials on the Reliability of a Composite Ship Hull

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Title:
The Effects of Stochastic Characteristics of Materials on the Reliability of a Composite Ship Hull
Author(s):
Wei Zhang;  Wenyong Tang;  Nianzhong Chen and Shengkun Zhang
Affilations:
Author(s):
Wei Zhang;  Wenyong Tang;  Nianzhong Chen and Shengkun Zhang
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Keywords:
composite material;  reliability analysis;  response-surface method;  sensitivity analysis
分类号:
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DOI:
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Abstract:
The effects of stochastic characteristics of materials on the reliability of ship hulls made of composite materials under longitudinal moment were extensively studied using reliability and sensitivity calculations of a composite ship hull which was sagging. The reliability indices and failure probabilities of the ship in three kinds of failure modes (buckling, material failure, and ultimate collapse) were calculated by the surface response method and JC method. The importance factors of random variables in stochastic models, such as the model errors in predicting the ultimate longitudinal strength of ship and the longitudinal bending moment that the ship withstands, as well as the stochastic characteristics of materials in the models used, were calculated. Then, the effects of these random variables, including the stochastic characteristics of materials on the reliability index and the failure probability of ships which were sagging, were discussed with their importance factors. The results show that the effects of stochastic characteristics of materials on the reliability of ship hulls made of composite materials should be considered during the reliability assessment of composite ships. Finally, some conclusions and recommendations were given for high-speed ship design and safety assessment.

References:

Chen Nianzhong (2007). Longitudinal strength analysis of ship hulls of composite materials under sagging moments. Composite Structures, 77(1), 36-44.
 Guedes Soares C (1997). Reliability engineering and system safety. Reliability of Components in Composite Materials, 55, 171-177.
 Gurvich MR, Pipes RB (1998). Reliability of composites in a random stress state. Composites Science and Technology, 58(6), 871-881.
 Ibnabdeljalil M, Curtin WA (1997). Strength and reliability of fiber-reinforced composites: localized load-sharing and associated size effects. International Journal of Solids and Structures, 34(21), 2649-2668.
 Kam TY, Lin SC (1992). Reliability analysis of laminated composite plates. Proc. NSC, Part A, 16, 163-171.
 Kam TY, Lin SC, Hsiao KM (1993). Reliability analysis of nonlinear laminated composite plate structures. Composite Structures, 25, 503-510.
 Lin SC, Kam TY, Chu KH (1998). Evaluation of buckling and first-Ply failure probabilities of composite laminates. International Journal of Solids and Structures, 35(13), 1395-1410.
 Mansour AE, Wirsching PH, Lucket MD, Plumpton AM, Lin YH (1997). Structural safety of ships. Transactions of the Society of Naval Architects and Marine Engineers, 105, 61-98.
 Mansour AE, Wirsching PH, Lucket MD, Plumpton, AM, Lin YH (1997). Assessment of reliability of existing ship structures. SSC-398, U.S. Coast Guard, Washington DC.
Sun Haihong, Chen Nianzhong, Zhang Shengkun (2002). Ultimate Strength and reliability analysis of high-speed ship in composite materials. Engineering Mechanics, 19(2), 124-128.
 Sutherland LS, Guedes Soares C (1997). Review of probabilistic models of the strength of composite materials. Reliability Engineering and System Safety, 56, 183-196.
 Yushanov SP, Bogdanovich SE (1998). Analytical probabilistic modelling of initial failure and reliability of laminated composite structures. International Journal of Solids and Structures, 35(7-8), 665-685.
 Zhao Guofan (1996). Theory and application of engineering structure reliability. Dalian University of Technology Press, Dalian, 145-158. (in Chinese)
 Zhu Jing, Guo Jun, Cao Mingfa (1996). Reliability analysis of composite ship structures. Shipbuilding of China, (4), 32-40. (in Chinese)

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Last Update: 2011-04-29