Oscillatory instability in two-dimensional dynamic fracture

被引：20

作者：

Bouchbinder, Eran ^{[1
]}

Procaccia, Itamar ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.98.124302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The stability of a rapid dynamic crack in a two-dimensional infinite strip is studied in the framework of linear elastic fracture mechanics supplemented with a modified principle of local symmetry. It is predicted that a single crack becomes unstable by a finite wavelength oscillatory mode at a velocity v(c), 0.8c(R)< v(c)< 0.85c(R), where c(R) is the Rayleigh wave speed. The relevance of this theoretical calculation to the oscillatory instability reported in the companion experimental Letter is discussed.

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页数：4

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