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- W776148841 abstract "본 논문에서는, 병렬 다중 프런트 해법을 이용한 비선형 병렬 구조해석 과정을 소개하고 이의 응용예제로써 2차원 및 3차원 균열 모델에서의 손상 국부화를 모사하였다. 비선형 유한요소 해석과 연속체 손상역학과 관련된 병렬 알고리듬을 구현하였고, 비선형 손상해석에서 사용되는 많은 변수들을 저장하기 위해서는 메모리가 많이 필요하므로 이를 줄이는 방안을 고려하였다. 그리고 손상 진전으로 인한 변형도 연화가 발생할 때 해를 구하기 위해 사용한 Riks의 연속법도 병렬 계산에 맞도록 수정하였다. 수치예제로써, 최대 약 1백만 자유도를 가진 모델들을 사용하여 손상 국부화 문제를 해석하였는데, 이 예제에서 비선형 병렬 알고리듬의 병렬효율과 자유도 변화에 따른 균열 끝단에서의 손상 변화를 살펴보았다. 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." @default.
- W776148841 created "2016-06-24" @default.
- W776148841 date "2003-04-30" @default.
- W776148841 modified "2023-09-26" @default.
- W776148841 title "Parallel Computation of a Nonlinear Structural Problem using Parallel Multifrontal Solver" @default.
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- W776148841 doi "https://doi.org/10.5139/jksas.2003.31.2.041" @default.
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