Abstract: Plane strain extrusion was studied by photoplastic method, using home-made Polycarcbonate as model material. Full field distributions of the strain were got and the average error of the strain is within 7%. The deformation zone and the effect of friction on deformation were determined by photoplastic characteristics. The study of this paper gives the characteristics of plane strain extrusion and the effect of die lubrication on the Deformation.

Key words: 变形, 光塑性, 平面挤压