ABSTRACT

This chapter provides the solutions of a number of problems of the creep of bars in pure bending using different physical models. It describes the results of investigation of long-term fracture of a rectangular plate under the effect of bending moments applied successively to different sides of the plate, in the presence of a corrosive medium. The chapter discusses the simplest case of bending a bar, namely, the bending. The pure bending conditions may form under different external loading. Since the bending moment in any cross-section of the bar is the same, in the case of a homogeneous bar with a constant cross-section the variation of curvature is the same for all sections. Consequently, in pure bending, the axis of this bar has the form of an arc of a circle. The formation of strains in pure bending can be regarded as a result of the mutual rotation of the plane cross sections.