21 July 2004 Nonlinear dynamic behavior of a shape memory alloy
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Shape Memory Alloys are now well recognized as potential materials for structural control. Even if some applications already exist, the dynamic behaviour of SMAs has not been clearly explained. This paper focuses on the study of a martensitic Cu Al Be beam under dynamical loading. A simplification of the thermomechanical model is necessary to build a Finite Element formulation able to perform dynamic simulations. In a first part, we study a classical tensile test in order to choose the way the model should be simplified. In a second part, dynamic test on the cantilever beam are presented and discussed. Wavelet techniques are also used to underline non linear behavior of this material in showing the dependence of the non linear natural frequency on the vibration magnitude.
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Manuel Collet, Manuel Collet, Emmanuel Foltete, Emmanuel Foltete, Ludek Heller, Ludek Heller, Christian Lexcellent, Christian Lexcellent, } "Nonlinear dynamic behavior of a shape memory alloy", Proc. SPIE 5387, Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics, (21 July 2004); doi: 10.1117/12.540416; https://doi.org/10.1117/12.540416

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