Shear Stress Distribution Analysis in Cold Formed Material

Determination and distribution of stresses in the deformation zone can be obtained by advanced plasticity theory, especially by experimental-analytical method such as visioplasticity. The visioplasticity method is very useful in providing a detailed analysis of the distribution of stresses, strains or strain rates in deformed material. In this paper shear stress distribution in cold formed aluminum alloy is analyzed by using visioplasticity method. The specimens were cold forward extruded trough a conical die. Further, the influence of the coefficient of friction on shear stress distribution in deformed zone of the material is investigated. The results are presented in form of diagrams.