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Communication Dans Un Congrès Key Engineering Materials Année : 2007

A numerical investigation of interface dynamics during martensitic transformation in a shape memory alloy using the level-set method

Takeshi Iwamoto
  • Fonction : Auteur
Mohammed Cherkaoui
  • Fonction : Auteur

Résumé

In this study, the simulation of the motion of an interface during the stress-induced martensitic transformation of a shape memory alloy is performed using the level-set method. The kinetics of the phase transformation is defined as an anisotropic kinetic relation between the rate at which the weak discontinuity moves, given by its normal velocity, and the thermodynamics driving force. The latter is derived from a dissipation function, which obeys the 1st and 2nd law of thermodynamics and accounts for large strains. Furthermore, a hyperelastic constitutive framework is used to describe the constitutive behavior of the material. The model is implemented into the finite element method and is then used to solve a 2D phase transformation problem in a shape memory alloy. Introduction Shape memory alloy (SMA) is well-known as one of smart materials and its industrial applications become much more important since the machines with the application of SMA as an actuator or a sensor are trying to be developed. The key of such intelligent functions, including the pseudo-elastic...
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Dates et versions

hal-00202812 , version 1 (08-01-2008)

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Citer

Takeshi Iwamoto, Mohammed Cherkaoui, Esteban P. Busso. A numerical investigation of interface dynamics during martensitic transformation in a shape memory alloy using the level-set method. 8th Asia-Pacific symposium on Engineering Plasticity and Its Applications, Sep 2006, Nagoya, Japan. pp.1199-1204, ⟨10.4028/www.scientific.net/KEM.340-341.1199⟩. ⟨hal-00202812⟩
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