Influence of phase transformation anisotropy on transformation surface around a crack tip
Conférence invitée
Auteur
PATOOR, EtienneMOHARA, GuillaumeCHATZIATHANASIOU, DimitrisCHEMISKY, YvesCHATZIGEORGIOU, George 
MERAGHNI, FodilRésumé
A transformation criterion that includes the effect of tension-compression asymmetry and texture-induced anisotropy is used to describe the size of the transformation region surrounding the tip of an edge crack in a shape memory alloy. This analysis is made within the framework of the linear elastic fracture mechanics (LEFM). Different opening modes are considered. Transformation surfaces obtained are compared with those published by Lexcellent et al. (Int. J. Fract. 169: 1-13, 2011) for the isotropic case to capture the influence of transformation anisotropy for different fracture modes.
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Conférence invitée; ;MERAGHNI, Fodil; ; (Ibrahim Karaman, Raymundo Arróyave and Eyad Masad/ Wiley, 2015)
In the present study, a new transformation criterion that includes the effect of tension- compression asymmetry and texture-induced anisotropy is proposed and combined with a thermodynamical model to describe the ...
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Article dans une revue avec comité de lecture; ;MERAGHNI, Fodil; ; (Springer, 2015)
In the present study, a new transformation criterion that includes the effect of tension–compression asymmetry and texture-induced anisotropy is proposed and combined with a thermodynamical model to describe the thermomechanical ...
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Article dans une revue avec comité de lecture; ; ;MERAGHNI, Fodil (Elsevier, 2016)
In the present study, a new 3D thermodynamic coupled model is proposed for SMAs. The behavior of SMA structures is described through several strain mechanisms, each associated with its proper internal variables. This model ...
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Conférence invitée; ; ;MERAGHNI, Fodil (2016)
In this work, a new 3D thermomechanically coupled phenomenological model is proposed for SMAs. SMA behavior is described through several strain mechanisms, each associated with its proper internal variables. Forward and ...
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Conférence invitée; ; ;MERAGHNI, Fodil (2016)
In this work, the influence of the direction and the history of thermomechanical loading of NiTi shape memory alloys on the overall material behavior is experimentally investigated. In the first part, cyclic biaxial ...