LARGE-SCALE ELASTIC-PLASTIC INDENTATION SIMULATIONS VIA NONEQUILIBRIUM MOLECULAR-DYNAMICS

被引：70

作者：

HOOVER, WG

DEGROOT, AJ

HOOVER, CG

STOWERS, IF

KAWAI, T

HOLIAN, BL

BOKU, T

IHARA, S

BELAK, J

机构：

[1] UNIV CALIF LAWRENCE LIVERMORE NATL LAB, DEPT APPL SCI, LIVERMORE, CA 94550 USA

[2] UNIV CALIF LAWRENCE LIVERMORE NATL LAB, NATL ENERGY SUPERCOMP CTR, LIVERMORE, CA 94550 USA

[3] UNIV CALIF LAWRENCE LIVERMORE NATL LAB, PRECIS ENGN PROGRAM, LIVERMORE, CA 94550 USA

[4] UNIV CALIF LAWRENCE LIVERMORE NATL LAB, DIV THEORET, LIVERMORE, CA 94550 USA

[5] KEIO UNIV, DEPT COMP SCI, YOKOHAMA, KANAGAWA 223, JAPAN

[6] HITACHI LTD, CENT RES LAB, KOKUBUNJI, TOKYO 185, JAPAN

来源：

PHYSICAL REVIEW A | 1990年 / 42卷 / 10期

关键词：

D O I：

10.1103/PhysRevA.42.5844

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Nonequilibrium indentation simulations for two-dimensional crystals composed of up to 1036 800=720×1440 atoms are described. The forces used include smoothly truncated Lennard-Jones force laws, both with and without added embedded-atom contributions typical of copper or nickel. Both low and intermediate temperatures are considered over a wide range of indentor speeds. Typical microhardness yield strengths for these two-dimensional materials, force divided by projected area, exceed 10% of the shear modulus. For the most part these simulations were carried out on the 64-transputer SPRINT computer at Livermore. © 1990 The American Physical Society.

引用

页码：5844 / 5853

页数：10

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