A SIMPLIFIED METHOD FOR DETERMINING THE STRESSES ON FREE SURFACES OF A CURVED WIDE STRIP
Keywords:
plastic pure bending, sintered strip, porosity, plane strain, circumferential stresses, logarithmic strainAbstract
The pure bending of wide strips of sintered material at small deformations and porosity under the conditions of plane deformation are examined. The equations of the deformation theory of plasticity of porous nonhardenеd materials and the general formula for determining the circumferential stress, expressed in radial stress and yield strength are used.
The problem is solved using a simplified method for determining the stresses in the upper and lower layers of the strip. By using the formulae of logarythmic strain, the values of the inner and outer radii of the strip are calculated, as well as the values of the deformation and porosity of the lower and upper points of the cross section.
