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http://dx.doi.org/10.5139/JKSAS.2003.31.2.041

Parallel Computation of a Nonlinear Structural Problem using Parallel Multifrontal Solver  

Jeong, Sun Wan (서울대학교)
Kim, Seung Jo (서울대학교)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.31, no.2, 2003 , pp. 41-50 More about this Journal
Abstract
In this paper, nonlinear parallel structural analyses are introduced by using the parallel multifrontal solver and damage localization for 2D and 3D crack models is presented as the application of nonlinear parallel computation. The parallel algorithms related with nonliear reduce the amount of memory used is carried out because many variables should be utilized for this highly nonlinear damage analysis. Also, Riks' continuation method is parallelized to search the solution when strain softening occurs due to damage evolution. For damage localization problem, several computational models having up to around 1-million degree of freedoms are used. The parallel performance in this nonlinear parallel algorithm is shown through these examples and the local variation of damage at crack tip is compared among the models with different degree of freedoms.
Keywords
Parallel computation; Large-scale nonlinear analysis; Continuum damage mechanics; Parallel performance; Damage concentration;
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