Elastic properties of dislocation 上产克大睾 SHANCBHAI JUAO TONO UNTVEEETTY Stress field of screw dislocation The elastic field inIn Cartesian coordinate system No tensile or compressive components Just consists of pure shear Gb Tax=-t:o sin0=- y 二T 2πx2+y2 (x,y,z) D (G8,z Gb x Ty=T:0 COS0= X 2πx2+y2 Institute of Forming Technology Equipment 11Elastic properties of dislocation Institute of Forming Technology & Equipment 11 Stress field of screw dislocation 2 2 sin 2 zx z xz Gb y x y            2 2 cos 2 zy z yz Gb x x y            0 0 0 0 0 zx zy yzxz    zx  θ z y x θ   z zy  r P (x,y,z) (r,θ,z)  The elastic field in In Cartesian coordinate system  No tensile or compressive components  Just consists of pure shear