Elastic interaction between edge dislocation, concentrated force, point heat source and edge crack in a semi-infinite plane

被引：0
作者：
Jia Li
QiHong Fang
YouWen Liu
机构：
[1] Hunan University,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body
[2] Hunan University,College of Mechanical and Vehicle Engineering
来源：
Meccanica | 2014年 / 49卷
关键词：
Edge dislocation; Concentrated force; Point heat source; Edge crack; Shielding effect; Image force;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigate the interaction between edge crack and edge dislocation as well as concentrated force and point heat source. The stress intensity factors at the edge crack tip and the image forces acting on the edge dislocation are calculated. The influence of the concentrated force, point heat source and edge dislocation on the shielding and anti-shielding effects to edge crack as well as the glide and climb forces acting on the edge dislocation is examined in detail. The results indicate that the shielding and anti-shielding effects increase acutely with the increment of concentrated force and point heat source. In addition, the glide and climb forces increase acutely with the decrement of the distance between dislocation and crack tip.
引用
收藏
页码：493 / 502
页数：9
相关论文
共 113 条
[1]  
Song HP(2012)The interaction between a screw dislocation and a rigid wedge inhomogeneity with an elastic circular inhomogeneity at the tip Meccanica 47 1097-1102
[2]  
Gao CF(1974)A crack along the interface of a circular inclusion embedded in an infinite solid J Mech Phys Solids 22 325-348
[3]  
Toya M(2009)The interaction between a screw dislocation and a circular inhomogeneity in gradient elasticity Meccanica 44 499-506
[4]  
Song HP(1986)Shear stress intensity factors for a planar crack with slightly curved front ASME Trans J Appl Mech 53 774-778
[5]  
Fang QH(2011)Interface edge crack in a multiferroic semicylinder Meccanica 46 1393-1399
[6]  
Liu YW(2012)Stress intensity factors for surface cracks in round bar under single and combined loadings Meccanica 47 1141-1156
[7]  
Gao H(2013)Interface crack between isotropic Kirchhoff plates Meccanica 48 507-526
[8]  
Rice J(2013)Arc-shaped interfacial crack in a non-homogeneous electro-elastic hollow cylinder with orthotropic dielectric layer Meccanica 48 415-426
[9]  
Li YD(2013)Three-dimensional crack initiation mechanisms in bcc-Fe under loading modes I, II and III Matter Sci Eng A 560 306-314
[10]  
Lee KY(2009)A review of extended/generalized finite element methods for material modeling Model Simul Mater Sci 17 187-218
12345678910