Global Sensitivity Analysis of the Failure Probability Upper Bound to Random and Fuzzy Inputs

For structure with both random and fuzzy input variables, a global sensitivity analysis (GSA) model is established to quantitatively evaluate the effects of these two kinds of input uncertainties on the upper bound of the fuzzy failure probability. The relationship between failure possibility and fuzzy failure probability upper bound is firstly derived in this paper. Based on this relationship, the single-loop nested sampling method can be...