Analytical model for predicting the full range true stress-true strain curve of high yield steel produced in Nigeria: Part 2

摘要

Tensile test which was conducted in Part 1 establishes the engineering stress-strain relationship, which is used in basic engineering problems. However, finite element (FE) techniques used for analysis of large displacement and deformation problems use the true stress-true strain of materials in its structural characterisation. The aim of the current research work is to develop a mathematical model for predicting full non-linear true stress-strain curves for locally obtained high yield steel rebars used in the construction industry in Nigeria. Ramsberg-Osgood and Rasmussen expressions are used in developing the true stress-true strain model. Parameters developed in Part 1 were used in the in obtaining the full range curves.