Creation of a stress-strain curve for FE analysis with the Ramberg-Osgood Equation

Ramberg-Osgood Equation - Describes the nonlinear relationship between stress and strain. It is special applicable to metals that harden under plastic deformation.
This relationship was proposed to describe the stress-strain curve using three parameters by Walter Ramberg and William R. Osgood from National Advisory Committee for Aeronautics, 1943.
Excel tool to create a stress-strain curve:
docs.google.com/spreadsheets/...
References
- Ramberg, W., & Osgood, W. R. (1943). Description of stress-strain curves by three parameters. Technical Note No. 902, National Advisory Committee For Aeronautics, Washington DC; ntrs.nasa.gov/citations/19930...
- Getting Started with ABAQUS 10.2 Plasticity in ductile metals