Research Status Quo and Prospect of the Theory of Shop Drawing
The research development of shop drawing on the basis of dynamic material model (DMM) is summarized in this paper. The principles of DMM are introduced emphatically, and the advantages and disadvantages of common plastic instability criteria are analyzed comparatively. Based on 2D shop drawing, 3D shop drawing including strain is established for illustrating the variation of the efficiency of power dissipation and flow instability area with temperature, strain rate and strain. All kinds of deformation mechanisms and alloy microstructure evolution pattern are analyzed by means of DMM shop drawing. So the theoretical basis and more convenient ways for determining hot working process of magnesium alloy are provided. Furthermore, the developing direction of shop drawing is clarified.