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http://dx.doi.org/10.12941/jksiam.2020.24.199

PARALLEL COMPUTATIONAL APPROACH FOR THREE-DIMENSIONAL SOLID ELEMENT USING EXTRA SHAPE FUNCTION BASED ON DOMAIN DECOMPOSITION APPROACH  

JOO, HYUNSHIG (DEPARTMENT OF AEROSPACE ENGINEERING, SEOUL NATIONAL UNIVERSITY)
GONG, DUHYUN (DEPARTMENT OF AEROSPACE ENGINEERING, SEOUL NATIONAL UNIVERSITY)
KANG, SEUNG-HOON (DEPARTMENT OF AEROSPACE ENGINEERING, SEOUL NATIONAL UNIVERSITY)
CHUN, TAEYOUNG (LIGNEX1)
SHIN, SANG-JOON (DEPARTMENT OF AEROSPACE ENGINEERING, INSTITUTE OF ADVANCED AEROSPACE TECHNOLOGY, SEOUL NATIONAL UNIVERSITY)
Publication Information
Journal of the Korean Society for Industrial and Applied Mathematics / v.24, no.2, 2020 , pp. 199-214 More about this Journal
Abstract
This paper describes the development of a parallel computational algorithm based on the finite element tearing and interconnecting (FETI) method that uses a local Lagrange multiplier. In this approach, structural computational domain is decomposed into non-overlapping sub-domains using local Lagrange multiplier. The local Lagrange multipliers are imposed at interconnecting nodes. 8-node solid element using extra shape function is adopted by using the representative volume element (RVE). The parallel computational algorithm is further established based on message passing interface (MPI). Finally, the present FETI-local approach is implemented on parallel hardware and shows improved performance.
Keywords
Finite element tearing and interconnecting (FETI) method; local Lagrange multiplier, Parallel algorithm;
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