Mesoscopic model of crack branching

被引：20

作者：

Heino, P

Kaski, K

机构：

[1] Institute of Advanced Computing, Tampere University of Technology, FIN-33101 Tampere

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.54.6150

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dynamic crack propagation has been studied using a mesoscopic dissipative spring model. Results are in agreement with recent experiments by Sharon et al. [Phys. Rev. Lett. 74, 5096 (1995)] showing crack branching and speed oscillation of the main crack beyond a critical speed. Similar oscillations are seen in local kinetic and potential energies near the propagating crack tip. These out-of-phase oscillations show that kinetic energy is directly transformed to potential energy. We also present evidence that branching is caused by a large crack boundary velocity.

引用

页码：6150 / 6154

页数：5

共 20 条

[1] INSTABILITY DYNAMICS OF FRACTURE - A COMPUTER-SIMULATION INVESTIGATION [J].