Parallel Computing of Multi-scale Finite Element Sheet Forming Analyses Based on Crystallographic Homogenization Method

Journal Article · Fri Aug 05 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2011261· OSTI ID:20726162

Kuramae, Hiroyuki; Okada, Kenji; Uetsuji, Yasutomo; Nakamachi, Eiji ^[1]; Tam, Nguyen Ngoc; Nakamura, Yasunori ^[2]

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1. Osaka Institute of Technology, 5-16-1, Omiya, Asahi-ku, Osaka 535-8585 (Japan)
2. Osaka Sangyou University, 3-1-1, Nakagaito, Daito, Osaka 574-8530 (Japan)

Since the multi-scale finite element analysis (FEA) requires large computation time, development of the parallel computing technique for the multi-scale analysis is inevitable. A parallel elastic/crystalline viscoplastic FEA code based on a crystallographic homogenization method has been developed using PC cluster. The homogenization scheme is introduced to compute macro-continuum plastic deformations and material properties by considering a polycrystal texture. Since the dynamic explicit method is applied to this method, the analysis using micro crystal structures computes the homogenized stresses in parallel based on domain partitioning of macro-continuum without solving simultaneous linear equations. The micro-structure is defined by the Scanning Electron Microscope (SEM) and the Electron Back Scan Diffraction (EBSD) measurement based crystal orientations. In order to improve parallel performance of elastoplasticity analysis, which dynamically and partially increases computational costs during the analysis, a dynamic workload balancing technique is introduced to the parallel analysis. The technique, which is an automatic task distribution method, is realized by adaptation of subdomain size for macro-continuum to maintain the computational load balancing among cluster nodes. The analysis code is applied to estimate the polycrystalline sheet metal formability.

• OSTI ID: 20726162
• Journal Information: AIP Conference Proceedings, Vol. 778, Issue 1; Conference: NUMISHEET 2005: 6. international conference and workshop on numerical simulation of 3D sheet metal forming process, Detroit, MI (United States), 15-19 Aug 2005; Other Information: DOI: 10.1063/1.2011261; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BACKSCATTERING
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
DISTRIBUTION
ELECTRON DIFFRACTION
ELECTRONS
FINITE ELEMENT METHOD
HOMOGENIZATION METHODS
MATERIALS WORKING
METALS
MICROSTRUCTURE
ORIENTATION
PLASTICITY
POLYCRYSTALS
SCANNING ELECTRON MICROSCOPY
SHEETS
STRESSES
TEXTURE