Calculating the strength for ultimate bending loads

Abstract

Experimental studies have established that during plastic bending of a rod in the region of small plastic deformations, there is no curvature of the planes of cross sections that have two axes of symmetry. This is true for materials that equally resist tension and compression and for materials that do not equally work under tension and compression. Bending is a very common, if not the most common, type of deformation in structures and machines. Therefore, for the full use of the material and the lightening of structures, the correct approach to calculating the bearing capacity of a rod during bending is one of the pressing issues. The need to determine bending moments for any values ​​of plastic deformation also arises during cold stamping. The approximate formulas obtained in this work for calculating bending moments throughout the plastic deformation of a rod can be used in practice.