This paper focuses on the development of nonlinear reduced order modeling techniques for the prediction of the response of complex structures exhibiting “large” deformations, i.e., a geometrically nonlinear behavior, which are nonintrusive, i.e., the structure is originally modeled within a commercial finite element code. The present investigation builds on a general methodology successfully validated in recent years on simpler beam and plate structures by: (i) developing a novel identification strategy of the reduced order model parameters that enables the consideration of the large number of modes (>50 say) that would be needed for complex structures, and (ii) extending a step-by-step strategy for the selection of the basis functions used to represent accurately the displacement field. The above novel developments are successfully validated on the nonlinear static response of a nine-bay panel structure modeled with 96,000 degrees of freedom within Nastran.
Nonintrusive Structural Dynamic Reduced Order Modeling for Large Deformations: Enhancements for Complex Structures
Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received July 14, 2013; final manuscript received November 29, 2013; published online February 13, 2014. Assoc. Editor: Arend L. Schwab.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Perez, R., Wang, X. Q., and Mignolet, M. P. (February 13, 2014). "Nonintrusive Structural Dynamic Reduced Order Modeling for Large Deformations: Enhancements for Complex Structures." ASME. J. Comput. Nonlinear Dynam. July 2014; 9(3): 031008. https://doi.org/10.1115/1.4026155
Download citation file:
- Ris (Zotero)
- Reference Manager