Shape Memory Alloys Cyclic Modeling for Proportional Loadings

Shape Memory Alloys (SMA) are good candidates for being integrated in composite laminates where they can be used as passive dampers, strain sensors, stiffness or shape drivers. In order to improve the SMA modeling and develop the use of these alloys in structural vibration control, better understandings of cyclic behavior and thermal dissipation are needed. The present study investigates experimentally the cyclic behavior of SMA on two different materials. Moreover, the strain rate impact on the thermal dissipation aspect is also studied using an infrared camera. A phenomenological 3D model based on the RL model [1] is then presented with the intention of modeling the behavior's alterations due to the cycling. By introducing the thermodynamic first principle, a study of the heat equation is developed in order to predict the temperature evolution during a cyclic tensile test. Besides a numerical results panel obtained with the phenomenological cyclic SMA model and the heat equation is presented. As a conclusion some prospects are done for the dynamic characterization of SMA.