Modelling, simulation and validation of plastic zone size during deformation of mild steel
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Date
2015
Authors
Adeosun, S.O.
Akpan, E.I.
Balogun, S.A.
Taiwo, O.O.
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering
Abstract
A model to predict the plastic zone size for material under plane stress condition has been developed and verified
experimentally. The developed model is a function of crack size, crack angle and material property (dislocation density). Simulation and validation results show that the model developed show good agreement with experimental results. Samples of low carbon steel (0.035%C) with included surface crack angles of 45o, 50o, 60o, 70o and 90o and crack depths of 2mm and 4mm were subjected to low strain rate between 0.48 x 10-3 s-1 – 2.38 x 10-3 s-1. The mechanical
properties studied were ductility, tensile strength, modulus of elasticity, yield strength, yield strain, stress at fracture and fracture toughness. The experimental study shows that strain rate has no appreciable effect on the size of plastic zone while crack depth and crack angle plays an imperative role in determining the size of the plastic zone of mild steel materials.
Description
Staff publications
Keywords
Applied stress , Crack angle , Crack size , Material property , Plastic zone size , Strain rate , Research Subject Categories::TECHNOLOGY
Citation
Adeosun, S.O., Akpan, E.I., Balogun, S.A., and Taiwo, O.O. (2015). Modelling, simulation and validation of plastic zone size during deformation of mild steel. International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, 9:(2) 381-386