Nonuniform rational B-splines (NURBS) finite element has advantages in analyzing the structure with curved surface geometry. In this research, we develop a component mode synthesis (CMS) based order-reduction technique which can be applied to large-scale 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 order-reduction formulation.
Component Mode Synthesis Order-Reduction for Dynamic Analysis of Structure Modeled With NURBS Finite Element
University of Connecticut,
191 Auditorium Road, Unit 3139,
Storrs, CT 06269
Laboratory Management Division,
Shanghai Maritime University,
Shanghai 201306, China
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received September 9, 2015; final manuscript received December 5, 2015; published online February 3, 2016. Assoc. Editor: Michael Leamy.
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Zhou, K., Liang, G., and Tang, J. (February 3, 2016). "Component Mode Synthesis Order-Reduction for Dynamic Analysis of Structure Modeled With NURBS Finite Element." ASME. J. Vib. Acoust. April 2016; 138(2): 021016. https://doi.org/10.1115/1.4032516
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