A graphical description of shear stress in the drawing of a thin-wall tubewith a conical die

According to the mathematical description of the value of shear stress, the regularity of the variation of the shear stress at one point and its figur e in three-dimensional space is presented. At the same time, the relationsh ip between the Lode parameter and the shape of the figure of the shear stre ss in three-dimensional space is described. In addition, the shear-stress f igures corresponding to the different positions of the thin-wall tube in th e drawing process are also given. (C) 2000 Elsevier Science S.A. All rights reserved.