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Modified Johnson-Cook Plasticity Model with Damage Evolution: Application to Turning Simulation of 2XXX Aluminium Alloy

Published online by Cambridge University Press:  22 February 2017

H. Ijaz*
Affiliation:
Mechanical Engineering DepartmentUniversity of JeddahJeddah, Saudi Arabia
M. Zain-ul-abdein
Affiliation:
Mechanical Engineering DepartmentUniversity of JeddahJeddah, Saudi Arabia
W. Saleem
Affiliation:
Mechanical Engineering DepartmentUniversity of JeddahJeddah, Saudi Arabia
M. Asad
Affiliation:
Mechanical Engineering DepartmentCollege of EngineeringPrince Mohammad Bin Fahd UniversityAlKhobar, Saudi Arabia
T. Mabrouki
Affiliation:
Mechanical Engineering Department , University of Tunis El Manar, ENIT , Tunis, Tunisia
*
*Corresponding author (hassan605@yahoo.com)

Abstract

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Mechanical properties of the metals and their alloys are influenced by the material grain size at microscale. In the present study, the Johnson-Cook (JC) material model is modified to incorporate the effect of material's grain size along with the plasticity coupled damage model. 2D finite element (FE) simulations of turning process of an aerospace grade aluminium alloy 2024 (AA2024) were performed with different grain sizes using a commercial FE software, ABAQUS/Explicit. FE simulation results were compared with the published experimental data on turning process of AA2024. The proposed modified JC material model successfully simulated the increase in cutting force as a function of grain size refinement.

Type
Research Article
Copyright
Copyright © The Society of Theoretical and Applied Mechanics 2017 

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Modified Johnson-Cook Plasticity Model with Damage Evolution: Application to Turning Simulation of 2XXX Aluminium Alloy
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