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http://dx.doi.org/10.5139/JKSAS.2016.44.9.775

Computational Algorithm for Nonlinear Large-scale/Multibody Structural Analysis Based on Co-rotational Formulation with FETI-local Method  

Cho, Haeseong (Department of Mechanical and Aerospace Engineering, Seoul National University)
Joo, HyunShig (Department of Mechanical and Aerospace Engineering, Seoul National University)
Lee, Younghun (Department of Mechanical and Aerospace Engineering, Seoul National University)
Gwak, Min-cheol (Department of Mechanical and Aerospace Engineering, Seoul National University)
Shin, SangJoon (Department of Mechanical and Aerospace Engineering, Institute of Advanced Aerospace Technology, Seoul National University)
Yoh, Jack J. (Department of Mechanical and Aerospace Engineering, Seoul National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.44, no.9, 2016 , pp. 775-780 More about this Journal
Abstract
In this paper, a computational algorithm of an improved and versatile structural analysis applicable for large-size flexible nonlinear structures is developed. In more detail, nonlinear finite element based on the co-rotational (CR) framework is developed. Then, a finite element tearing and interconnecting method using local Lagrange multipliers (FETI-local) is combined with the nonlinear CR finite element. The resulting computational algorithm is presented and applied for nonlinear static analyses, i.e., cantilevered beam and multibody structure. Finally, the proposed analysis is evaluated with regard to its parallel computation performance, and it is compared with those obtained by serial computation using the sparse matrix linear solver, PARDISO.
Keywords
Co-rotational formulation Finite element domain decomposition method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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