An enhanced AMLS method and its performance

Evaluating Mode Selection Methods for Component Mode Synthesis

“…In the last five decades, significant progress has been achieved [3][4][5][6][7][8][9][10][11], but various issues remain, including searching for new methodologies [12][13][14], interface reduction [15][16][17][18], error estimation [19][20][21][22][23], and so on. Recently, the CMS method has been employed not only for transient analysis, including nonlinear dynamics [24], but also for biomolecular assembly modeling [25,26].…”

“…Since substructural modal effects are transferred to adjacent fields at the interface degrees of freedom (DOF), well-defined interface handling techniques are important. Depending on the interface handling techniques, the CMS methods are generally categorized into two main groups: fixed interface methods [3][4][5][6]12,13] or free interface methods [7][8][9]. In particular, the enhanced Craig-Bampton (CB) and automated multilevel substructuring (AMLS) methods [12,13] that were recently developed have opened up new possibilities to ensure an extreme accuracy in the reduced model.…”

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

“…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].…”

Dynamic Stiffness Effect of Mechanical Components on Gear Mesh Misalignment

“…In addition, simplifying the dynamic model of the FE housing, which has a tremendous number of DOFs, requires the use of reduced-order modeling (ROM) techniques [22][23][24][25][26][27][28][29][30][31][32][33]. Component mode synthesis (CMS) is currently the most popular ROM technique for dynamic systems [26][27][28][29][30][31]. The typical CMS method uses a small number of important and constraint modes to construct a reduced model that mathematically projects the displacement fields of the gearbox components onto modal coordinates.…”