Elastic properties of dislocation 上清充通大学 DREANOIAI AO TONG UNTVEREITT Stress field of screw dislocation ●The Volterra approach→a screw dislocation The stress field of a straight screw The elastic distortion of a dislocation of infinite length cylinder of elastic material Institute of Forming Technology Equipment 9Elastic properties of dislocation Institute of Forming Technology & Equipment 9  The Volterra approach → a screw dislocation Stress field of screw dislocation z x y z x y b The stress field of a straight screw dislocation of infinite length The elastic distortion of a cylinder of elastic material