旋转圆柱中刃型位错偶极子的弹性平面解

Elasticity Plane Solution for Edge Dislocation Dipole in a Revolving Disk

分析了具有角速度和角加速度的旋转圆柱材料中的刃型位错偶极子.运用复变函数理论获得了应力场的精确解,推导出了作用于刃型位错偶极子的位错力表达式,并讨论了旋转圆盘角速度、角加速度和偶极子距离对位错力的影响.结果表明,旋转角加速度为负值时,存在一个位错偶极子的稳定平衡位置.

Edge dislocation dipole is analyzed in a revolving disk which has angular velocity and angular acceleration. Exact solutions of stress field are obtained by using the complex function theory. The expressions of the image force acting on edge dislocation dipole are derived. The influence of the angular velocity and angular acceleration and the distance between dipoles in the revolving disk on the image force is discussed. Numerical analysis and discussion show that there is a stable equilibrium point of the edge dislocation dipole in the revolving disk when the angular acceleration is negative.