Abstract
AbstractThis 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...
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