Stress field near the crack tip of a semi-infinite crack inside a current-carrying plate at the moment while the current is switching on

被引：0

作者：

Hu, Yu-da ^{[1
]}

Bai, Xiang-zhong ^{[1
]}

机构：

[1] Tianjin Univ, Tianjin, China

来源：

Gong Cheng Li Xue/Engineering Mechanics | 2000年 / 17卷 / 06期

关键词：

Boundary conditions - Compressive stress - Crack propagation - Current density - Elastic moduli - Magnetoelectric effects - Maxwell equations - Stress analysis - Thermal effects;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

With the Maxwell's equations for an elastic body and the boundary and initial conditions, the equations for determination of electrical current density near a crack tip are obtained. The tip of the semi-infinite crack is located inside an infinite thin current-carrying plate. All the equations hold at the moment while the current is switching on. From these equations the temperature and stress expressions at the crack tip are obtained too. The numerical examples show that under the Joule heat source provided by electric current, the temperature around crack tip grows up instantly and the compressive stresses appear too. Consequently, propagation of the crack could be arrested.

引用

页码：135 / 139

共 29 条

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