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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 111
PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON PARALLEL, DISTRIBUTED, GRID AND CLOUD COMPUTING FOR ENGINEERING
Edited by:
Paper 37

Implementation of Parallel Computations on 3-D Enriched Finite Elements Used for Fracture Analyses

M.F. Yaren and A.O. Ayhan

Department of Mechanical Engineering, Sakarya University, Sakarya, Turkey

Full Bibliographic Reference for this paper
M.F. Yaren, A.O. Ayhan, "Implementation of Parallel Computations on 3-D Enriched Finite Elements Used for Fracture Analyses", in , (Editors), "Proceedings of the Fifth International Conference on Parallel, Distributed, Grid and Cloud Computing for Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 37, 2017. doi:10.4203/ccp.111.37
Keywords: fracture mechanics, parallel computing, element stiffness matrix, FCPAS, OpenMP.

Summary
The finite element method is a very useful and easy technique to calculate stresses. Because of singularity, conventional finite element method does not yield adequate results at the crack tip for fracture mechanics problems without using some special techniques. Enriched element method is used in FCPAS in serial computing mode. Because of much higher stress gradients near the crack tip, number of integration points used to integrate enriched elements is much higher than regular elements. Thus, depending on the number of elements around the crack front, computations and assembly of enriched element stiffness matrices can be very time consuming. In this paper, element stiffness matrix calculation subroutine is modified to allow parallel computing. OpenMP‘s shared memory programming routines are used to be able to compute element stiffness matrices in a parallel manner. Eleven different cases of fracture mechanics problems are solved by parallelized version and compared with serial processing.

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