Journal of
Civil Engineering and Construction Technology

  • Abbreviation: J. Civ. Eng. Constr. Technol.
  • Language: English
  • ISSN: 2141-2634
  • DOI: 10.5897/JCECT
  • Start Year: 2010
  • Published Articles: 141

Full Length Research Paper

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

E. Nwankwo
  • E. Nwankwo
  • Department of Civil Engineering, University of Benin, Nigeria.
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S. O. Osuji
  • S. O. Osuji
  • Department of Civil Engineering, University of Benin, Nigeria.
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  •  Received: 11 November 2014
  •  Accepted: 05 March 2015
  •  Published: 17 March 2015

Abstract

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.

 

Key words: Yield stress, true stress, true strain, finite element modelling, ultimate tensile strength.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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