Confidence Bounds on Design Variables Using High-Dimensional Model Representation–Based Inverse Reliability Analysis
Publication: Journal of Structural Engineering
Volume 139, Issue 6
Abstract
This paper presents a novel solution procedure for inverse reliability problems with implicit response functions without requiring the derivatives of the response functions with respect to uncertain variables. This can be used to determine the unknown design parameters such that the prescribed reliability indexes are attained in the presence of mixed uncertain (both random and fuzzy) variables. The proposed computational procedure involves three steps: (1) probability of failure calculation using high-dimensional model representation (HDMR) for the limit state/performance function approximation, transformation technique to obtain the contribution of the fuzzy variables to the convolution integral, and fast-Fourier transform for solving the convolution integral; (2) reliability index update; and (3) most probable point update. The limit state/performance function approximation is obtained by linear and quadratic approximations of the first-order HDMR component functions at most probable point. This is a versatile method that can solve even highly nonlinear problems or the problems with multiple parameters. The methodology developed is applicable for inverse reliability analysis involving any number of fuzzy variables and random variables with any kind of distribution. The accuracy and efficiency of the proposed method is demonstrated through four examples involving explicit/implicit performance functions.
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Published In
Journal of Structural Engineering
Volume 139 • Issue 6 • June 2013
Pages: 985 - 996
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Aug 28, 2011
Accepted: Aug 30, 2012
Published online: Sep 3, 2012
Published in print: Jun 1, 2013
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