Journal of the Korean Society for Industrial and Applied Mathematics

Korean Society for Industrial and Applied Mathematics (한국산업응용수학회)
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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)
  • Received : 2020.06.09
  • Accepted : 2020.06.15
  • Published : 2020.06.25
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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

Acknowledgement

This work was supported by the Advanced Research Center Program (NRF-2013R1A5A1073861) through a grant from the National Research Foundation of Korea (NRF) funded by the Korean government (MSIP) contracted through the Advanced Space Propulsion Research Center at Seoul National University and also by the EDISON Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT (Grant No. NRF-2020M3C1A6043396).

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