Reliability sensitivity analysis based on multi-hyperplane combination method |
| |
Affiliation: | 1. School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, Anhui, China;2. School of Machinery Engineering, Huaiyin Institute of Technology, Huai''an 223003, Jiangsu, China;3. Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability, Hebei University of Technology, Tianjin 300130, China |
| |
Abstract: | For a nonlinear limit state function, the first-order reliability method (FORM) may cause large errors in the computation of not only the reliability index or failure probability but also the reliability sensitivity. In order to obtain more the accurate results of the reliability sensitivity analysis, a number of hyperplanes are built near the design point by first-order Tayler series expansion, which replace the known nonlinear limit state hypersurface, and an equivalent computational method is utilized to construct an equivalent hyperplane of the obtained hyperplanes. And the reliability sensitivities can be estimated more accurately by the derived equations based on the equivalent hyperplane. An example shows that the method is effective and feasible. |
| |
Keywords: | Reliability sensitivity Failure probability Nonlinearity Multi-hyperplane combination method Equivalence |
本文献已被 万方数据 ScienceDirect 等数据库收录! |
|