COMPREHENSIVE INVESTIGATION OF EXTRUSION OF П-SHAPED BRACKETS. REPORT 7. STRAINED STATE AND STRENGTHENING OF BLANKET DURING RESTRICTED EXTRUSION. PART 1

Abstract

The solution beginning of the determination problem of the strained state of a blanket during restricted extrusion of П-shaped brackets under the conditions of plane deformation in the general case of a nonaligned placement of the punch and the die is stated. The formulae were obtained, which allow one to determine current coordinates of material points and cumulative strain in the area of plastic strain situated under the extruded thick wall for any specific value of the working stroke of a punch.