... for small failure probability events, and the accuracy efficiency trade-off in surrogate models. Design/methodology/approach First, an adaptive partitioned Sobol sampling (APSS) strategy is proposed to enhance the exploration capability and uniformity of initial samples, efficiently probing failure...

... might not satisfy the failure probability constraints defined in Eq. (1) . In order to acquire a global optimum solution, GA is employed to solve the optimization problem defined in Eq. (3) in this contribution. GA is a computational model inspired by the Darwin's biological evolution theory...

... by increase of the distance between stator blades the thermal radiation effect is diminished. Finally, by decrease of the blade distance the failure probability and creep plastic deformation decrease. Research limitations/implications – This paper describes the effect of thermal radiation in thermal...

...‐Coulomb criterion and damage‐dilatancy criterion. Response surface method combining with Monte Carlo method are adopted to calculate the failure probabilities of elements near the caverns. Various working conditions including different operation pressures and distances between caverns are also considered...