Dynamic Reliability Analysis of Multi-component Structures Based on Moving Extremum Response Surface Method-based Decomposed Coordinative Strategy

Abstract

The reliability analysis of complex structures assembled from multiple components has the problems of complicated calculation process and low calculation efficiency. The moving extremum response surface method-based decomposed coordinative strategy (DCMERSM) is proposed based on extremum response surface method, moving least squares and decomposition coordinative strategy. The dynamic reliability analysis of the radial deformation of the high-pressure turbine blade disk of the aeroengine considering the effect of fluid-thermal-structural coupling is performed. The direct simulation and decomposed coordinative extremum response surface method (DCERSM) are compared to verify the effectiveness and applicability of the proposed DCMERSM in modeling characteristics and simulation performance. The results show that the DCMERSM is not only suitable for the dynamic reliability analysis of rotor machinery, but also for the reliability analysis of multi-component structures of complex machinery.

Keywords

• dynamic reliability
• multi-component structure
• moving extremum response surface method-based decomposed coordinative strategy
• turbine blisk
• fluid-thermal-structural coupling