yield surface

This work addresses the determination of yield surfaces for geometrically exact elastoplastic rods. Use is made of a formulation where the rod is subjected to an uniform strain field along its arc length, thereby reducing the elastoplastic problem of the full rod to just its cross-section. By integrating the plastic work and the stresses over the rod's cross-section, one then obtains discrete points of the yield surface in terms of stress resultants. Eventually, Lamé curves in their most general form are fitted to the discrete points by an appropriate optimisation method.

ABSTRACT

In continuation of our work on yield surfaces

Part- 1 (node/9016)

Part- 2 (node/9073) and

Part- 3 (node/9103) 

 My last two posts on this series

Part- 1 (node/9016) and

Part- 2 (node/9073)

were mainly focussed on the tension–torsion (σ11–√3σ₁₂) stress space. This paper will be the final post on this series and will focus mainly on the behavior of  both of these alloys under tension–tension (σ₁₁–σ₂₂)space and conclude this ongoing research.

Abstract.

Continuing on the work from the previous thread posted on

node/9016