Three-dimensional constitutive model for structural and functional fatigue of shape memory alloy actuators
Article dans une revue avec comité de lecture
Date
2018Journal
International Journal of FatigueRésumé
A three-dimensional constitutive model is developed that describes the behavior of shape memory alloy actuators undergoing a large number of cycles leading to the development of internal damage and eventual catastrophic failure. Physical mechanisms such as transformation strain generation and recovery, transformation-induced plasticity, and fatigue damage associated with martensitic phase transformation occurring during cyclic loading are all considered within a thermodynamically consistent framework. Fatigue damage in particular is described utilizing a continuum theory of damage. The total damage growth rate has been formulated as a function of the current stress state and the rate of martensitic transformation such that the magnitude of recoverable transformation strain and the complete or partial nature of the transformation cycles impact the total cyclic life as per experimental observations. Simulation results from the model developed are compared to uniaxial actuation fatigue tests at different applied stress levels. It is shown that both lifetime and the evolution of irrecoverable strain are accurately predicted by the developed model.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Article dans une revue avec comité de lectureARIF, Muhamad Fatikul; CHEMISKY, Yves; ROBERT, Gilles;
FITOUSSI, Joseph;
MERAGHNI, Fodil;
SAINTIER, Nicolas (Elsevier, 2014)
This paper aims at studying fatigue damage behavior of injection molded 30 wt% short glass fiber reinforced polyamide-66 composite (PA66/GF30). The evolution of dynamic modulus, hysteresis area, cyclic creep and temperature ... -
Article dans une revue avec comité de lectureThe current work deals with periodic thermomechanical composite media, in which the material constituents are considered to obey the generalized standard materials laws. The aim is to provide a proper homogenization framework ...
-
Communication avec acteCet article présente un modèle micromécanique visco-endommageable pour les composites à matrice thermoplastique renforcée par des fibres de verre courtes et soumis à un chargement en fatigue. L'approche multi-échelles ...
-
Article dans une revue avec comité de lectureACHOUR-RENAULT, Nadia; CHATZIGEORGIOU, George;
MERAGHNI, Fodil; CHEMISKY, Yves;
FITOUSSI, Joseph (Elsevier, 2015)
In this work, the phenomenological viscoplastic DSGZ model[Duan, Y., Saigal, A., Greif, R., Zimmerman, M. A., 2001. A Uniform Phenomenological Constitutive Model for Glassy and Semicrystalline Polymers. Polymer Engineering ... -
Article dans une revue avec comité de lectureACHOUR, Nadia; CHATZIGEORGIOU, George;
MERAGHNI, Fodil; CHEMISKY, Yves;
FITOUSSI, Joseph (Elsevier, 2015)
In this work, the phenomenological viscoplastic DSGZ model (Duan et al., 2001 [13]), developed for glassy or semi-crystalline polymers, is numerically implemented in a three-dimensional framework, following an implicit ...