摘要
Both discrete and continuous computational methods are commonly used for model-based simulation of failure evolution. Molecular dynamics (MD) and the finite element method (FEM) are representative discrete particle and continuous methods, respectively. The Material Point Method (MPM) is a continuum-based particle method that is formulated based on the weak form of the governing equations in a way similar to the FEM. Here, we report a comparative study of shear-band evolution as predicted by all-atom MD, coarse-grain MD (in which several atoms are subsumed into a single effective particle), and MPM. Overall features of the responses at different scales are summarized, along with a discussion of similarities and differences among the results obtained via the three spatial discretization approaches. This work could serve as a benchmark example for developing multiscale geomechanics under extreme loading scenarios such as earth penetration and underground explosions.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 2337-2354 |
頁數 | 18 |
期刊 | Acta Geotechnica |
卷 | 16 |
發行號 | 8 |
DOIs | |
出版狀態 | 已出版 - 8月 2021 |