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Article Dans Une Revue Smart Materials and Structures Année : 2009

Isothermal and anisothermal implementations of 2D shape memory alloy modeling for transient impact response calculation

Résumé

A numerical implementation of the Raniecki Lexcellent (RL) [1,2,3] model for shape memory alloys (SMA) coupled with heat equation is presented in the paper, adapted to high strain rate loading. THe objective is to predict the time response of a 2D SMA structure subjected to an impulse force and induced free vibration with a decreasing amplitude for isothermal and anisothermal conditions. The choice of the material mechanical properties has been done in order to have phases transformations during the oscillations. The apparent damping and stiffness effects due to these phase changes is clearly identified when the results are compared with a linear model without induced martensite. The thermomechanical constitutive relation of the SMA has been fullfiedd to be able to take into account time reaction when the strain rate is very high. The full model has been implemented in a finite element code and tested on a 2D sample.
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Dates et versions

hal-00441007 , version 1 (23-03-2018)

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Manuel Collet, Morvan Ouisse, Emmanuel Foltete, Christian Lexcellent. Isothermal and anisothermal implementations of 2D shape memory alloy modeling for transient impact response calculation. Smart Materials and Structures, 2009, 18 (12), 12 p. ⟨10.1088/0964-1726/18/12/125019⟩. ⟨hal-00441007⟩
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