Linear elastic, plastic with exponential strain hardening is the most approximate model to the real elasto-plastic material behaviour. The main difference related to the precedent model is the more detailed description of the plastic deformation part of the curve, which is in this case an exponential curve defined from 2 constants μ y n, parameters characteristic for each material.
This material law could be described through a model with several segments (multilinear behaviour). This behaviour can be represented by a mechanical system with several components, spring - friction plane connected in serial (each component would describe each segment in the curve) and followed by a spring to describe the part corresponding to linear elastic behaviour.