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

Abstract

Abstract. A major challenge in component mode synthesis (CMS) remains

Evaluating Mode Selection Methods for Component Mode Synthesis

“…We here introduce the new a posteriori method, which uses eigenvector relation between the global and substructural modes [34][35][36]. From Eq.…”

“…Since the method has been derived from the eigenvector relation between the global and substructural modes only, it could be employed in various CMS methods if the eigenvector relations are well defined. In previous studies, the feasibility of the EMC method was also tested in the CB and F-CMS methods [34][35][36]. In particular, the EMC method uses the full eigenvector relation, unlike the a priori methods that use the interface coupling matrices.…”

“…Since the mid-1990s, various mode selection methods were developed to overcome this limitation by taking the substructural modal contribution into account [8,[29][30][31][32][33][34][35][36]. Most methods were developed for the CB method, which is the most popular fixed interface method [29,30,33].…”

“…Although the details of the mode selection methods are different, they share two main key ideas: an interface modal contribution, and an a priori concept. Recently, a posteriori mode selection was additionally proposed [34][35][36]. It also uses substructural modal contribution to select the dominant modes, but it also considers the total modal contribution that is not limited in the interface modal effects.…”

“…We first investigate the own characteristics, and identify close correlations. We also introduce the a posteriori mode selection method that was recently developed using the global and substructural modal relation [34][35][36]. In particular, we study the specific operation counts of the a priori and a posteriori methods, and we theoretically compare the computational efficiency by using dimensionless parameters.…”