期刊
COMPUTER PHYSICS COMMUNICATIONS
卷 169, 期 1-3, 页码 177-182出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cpc.2005.03.040
关键词
shear; yield; friction; amorphous
Molecular simulations of yield in models of glassy polymers and amorphous metals are used to test classic yield criteria. Bulk systems follow the pressure-modified von Mises criterion, which is based on an isotropic, energy-driven model of yield. Thin films follow the Mohr-Coulomb criterion, which is based on an anisotropic friction model. The difference in behavior is correlated with a change in shear mechanism, and the connection between thin film results and macroscopic friction laws is discussed. (c) 2005 Elsevier B.V. All rights reserved.
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