Hybrid reliability-based design optimization (HRBDO) can provide an effective way to obtain the optimum in presence of both random and interval variables. HRBDO is typically described as a nested model. It computationally expensive when directly solving problem by method. To address this issue, paper develops efficient decoupled method that aims at performance measure function approximation ada...

Abstract Reliability analysis and reliability-based design have attracted huge attention since their origin, especially in the engineering optimization field. Integrating a novel grid feature (GF) mechanism into weighted simulation method (WSM), feature-based (GFWSM) is proposed this paper. By sorting samples random variable space, GF serializes failure probability calculation process, which ca...

It has been recognized that design-for-reliability (DFR) during the conceptual design stage is very challenging. There are several gaps and deficiencies hindering the DFR implementation. The first gap is due to the disconnection between the output of the conceptual design and reliability parameters needed for the reliability modeling. The second gap is between the knowledge available during the...