CRYSTAL INSTABILITIES AT FINITE STRAIN

被引：811

作者：

WANG, JH ^{[1
]}

YIP, S ^{[1
]}

PHILLPOT, SR ^{[1
]}

WOLF, D ^{[1
]}

机构：

[1] MIT,DEPT NUCL ENGN,CAMBRIDGE,MA 02139

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.71.4182

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It is demonstrated that stability criteria derived using elastic stiffness coefficients which govern stress-strain relations at finite deformation give quantitative predictions of crystal instability, as observed in direct molecular dynamics simulations. With the aid of such analysis we show that instabilities can be triggered in succession; as a consequence, the limit of metastability in the superheating of a defect-free crystal can be predicted.

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页码：4182 / 4185

页数：4

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