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- W3016669508 abstract "Discontinuous deformation analysis (DDA) has gained wide acceptance in geotechnical engineering. The simulation of large-scale engineering problems using DDA is computationally expensive. Thus, improving the calculation efficiency of DDA is of significance. The parallel technique based on open multiprocessing (OpenMP) is implemented into DDA. Previous work usually focused on one or two specific subroutines. In contrast, in this paper, all the time-consuming subroutines that have the possibility to do the calculation simultaneously, including contact detection, matrix assembly, simultaneous equation solver, postjudgment of contacts, and block information update, are modified and incorporated with parallel implementation based on OpenMP. The parallel degree can be up to 98%. The computational efficiency of the accelerated DDA is demonstrated by several large-scale simulations with different block quantities running on a different number of threads. As an application, the accelerated DDA is used to efficiently analyze a large-scale landslide, which can efficiently provide information for landslide disaster prevention and mitigation. In conclusion, the accelerated DDA exhibits high performance in the analysis of large-scale problems." @default.
- W3016669508 created "2020-04-24" @default.
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- W3016669508 date "2020-07-01" @default.
- W3016669508 modified "2023-10-14" @default.
- W3016669508 title "OpenMP-Based Parallel Two-Dimensional Discontinuous Deformation Analysis for Large-Scale Simulation" @default.
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- W3016669508 doi "https://doi.org/10.1061/(asce)gm.1943-5622.0001705" @default.
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