Application of response surface method for reliability analysis of stiffened laminated plates

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Yang, Nana and Das, Purnendu K. and Yao, Xiongliang (2015) Application of response surface method for reliability analysis of stiffened laminated plates. Ships and Offshore Structures, 10 (6). pp. 653-659. ISSN 1754-212X (https://doi.org/10.1080/17445302.2014.943388)

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Abstract

The practicability of structural reliability analysis methods for a specific limit state depends to a great extent on the complexities of the formulation of the limit-state function. Often the limit-state function is not available in the explicit form. One way to solve the problem is to approximate a limit-state surface in a numerical form by regression. Once the response surface has been obtained, the reliability analysis is made with the response surface as limit-state surface in place of the complicated limit-state surface of the model. An application methodology for structural reliability analysis of the composite structures based on the response surface method in conjunction with nonlinear finite-element analysis is demonstrated in this paper. With the fitted response surface obtained, further developments for defining partial safety factors for composite design purpose are now possible.

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