Abstract
This work investigates numerically and experimentally the nonlinear vibration of a Shape Memory Alloy (SMA)passive damping vibration device, where the main elements are pseudoelastic SMA wires. At first, a one-degree of freedom SMA oscillator, composed of a mass balanced by two pseudoelastic SMA wires, where the configuration was based on the SMA passive damping vibration device, was considered. A thermomechanical constitutive model, based on the thermodynamic framework proposed by Boyd and Lagoudas, was used to predict the constitutive behavior of the SMA wires. The mechanical model was supplemented by simple heat transfer analysis, so that temperature variations caused by martensitic phase transformation and the effect of different frequency responses could be investigated. Numerical simulations of transmissibility curves and temperature variations of SMA oscillator are correlated with experimental results obtained from vibration sine sweep tests.
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