A Mode Selection Criterion Based on Flexibility Approach in Component Mode Synthesis

A Mode Selection Algorithm for the Flexibility-Based Component Mode Synthesis

“…If the approximated global eigenvector i g ) (φ is close enough to the exact global eigenvector i g ) (φ , the right-hand side in Equation (14) that are much smaller than the terms in the left-hand side can be negligible. Consequently, Equation (14) can be rewritten by…”

“…After introducing the first approach of the CMS method in 1960s, various methods have been proposed [1][2][3][4][5][6][7][8][9][10][11][12]. In particular, the flexibility based CMS (F-CMS) method was developed using localized Lagrange multipliers [13], and its extended works have been performed [14,15].…”

An enhanced AMLS method and its performance

“…That is, the original (global) models can be more precisely approximated. This approach has been used for flexibility based CMS methods, in which, unlike for the CB and AMLS methods, substructures are connected with a free interface [7,[10][11][12].…”

“…Therefore, it has always been an important issue to reduce computational cost. A variety of model reduction methods have been developed and widely used in many engineering fields [1][2][3][4][5][6][7][8][9][10][11][12]. The focus in model reduction is on reducing computational cost with the least possible loss in accuracy.…”

“…Within the structural dynamics community, component mode synthesis (CMS) is a popular and effective finite element (FE) model reduction method [5][6][7][8][9][10][11][12]. In CMS methods, an original (global) FE model is partitioned into smaller substructures, substructural eigenvalue problems are solved, and a reduced model constructed by retaining only dominant substructural modes is used for calculations, instead of the much larger original FE model.…”