Improved hyper-reduction approach for the forced vibration analysis of rotating components

Abstract Forced vibration analysis is an indispensable process for the design of a rotating component. However, rather expensive nonlinear static and linear frequency response analyses are usually accompanied by domain analysis. The traditional mode-superposition method (MSM) effectively reduces cost earlier processes remains as computational bottleneck. In this paper, application hyper-reduction will be proposed along with model order reduction (MOR) framework component forced energy-conserving sampling weighting (ECSW) employed iterative computation. pre-stressed stiffness matrix reduced finite elements (FEs) resulting from ECSW used post computation stage. Also, variety MOR attempted performance comparison, including MSM, proper orthogonal decomposition (POD)-based (ROM), hybrid approach. It found that present ECSW-combined significantly relieve bottleneck, provide minimal loss accuracy, compatible both