Component Mode Synthesis Order Reduction for Dynamic Analysis of Structure Modeled With NURBS Finite Element

Abstract

Nonuniform rational Bsplines (NURBS) finite element has advantages in analyzing the structure with curved surface geometry. In this research, we develop a component mode synthesis (CMS) based orderreduction technique which can be applied to largescale NURBS finite element dynamic analysis. In particular, we establish a new substructure division scheme. The underlying idea is to optimally construct interface between adjacent substructures that can maximize the geometry consistency between the original structure and the divided substructures and at the meantime facilitate the compatibility conditions needed in mode synthesis. Case studies are carried out to validate the performance of the orderreduction formulation.