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Numerical Analysis of Damage Thermo-Mechanical Models

Published online by Cambridge University Press:  21 July 2015

Hamdi Hentati ,
Ilyes Ben Naceur ,
Wassila Bouzid  and
Aref Maalej
Hamdi Hentati*
Affiliation:
LASEM Laboratory, National School of Engineers of Sfax, University of Sfax, Tunisia
Ilyes Ben Naceur
Affiliation:
Unit of Mechanical Production and Materials, National School of Engineers of Sfax, University of Sfax, Tunisia
Wassila Bouzid
Affiliation:
Unit of Mechanical Production and Materials, National School of Engineers of Sfax, University of Sfax, Tunisia
Aref Maalej
Affiliation:
LASEM Laboratory, National School of Engineers of Sfax, University of Sfax, Tunisia
*
*Corresponding author. Email: [email protected] (H. Hentati)
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Abstract

In this paper, we present numerical computational methods for solving the fracture problem in brittle and ductile materials with no prior knowledge of the topology of crack path. Moreover, these methods are capable of modeling the crack initiation. We perform numerical simulations of pieces of brittle material based on global approach and taken into account the thermal effect in crack propagation. On the other hand, we propose also a numerical method for solving the fracture problem in a ductile material based on elements deletion method and also using thermo-mechanical behavior and damage laws. In order to achieve the last purpose, we simulate the orthogonal cutting process.

Keywords

65M1078A48Fracture mechanicsbrittle and ductile materialsvariational approachJohnson and Cook lawsand orthogonal cutting
Type
Research Article
Information
Advances in Applied Mathematics and Mechanics , Volume 7 , Issue 5 , October 2015 , pp. 625 - 643
Copyright
Copyright © Global-Science Press 2015 

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