FEM simulation of the Nitinol wire
- 378 Downloads
In recent years, one of the most promising new actuator technologies is based on the use of Shape Memory Alloys (SMA). The main challenge for the application of devices that use these materials is the hysteresis in the phase transition they suffer during actuation. Finite element analysis (FEA) is an important aid in the simulation of mechanical properties and thermal fields in actuators. Dynamic simulations give in many cases enough information without the necessity of building a prototype. We have used ABAQUS to simulate a Nitinol wire used in a micropositioning actuator. The model parameters, not given by the supplier but required by the FEA program, have been obtained by thermal and mechanical characterization of the material used. The output force is computed and compared with the measurements.
KeywordsAustenite Martensite Shape Memory Alloy European Physical Journal Special Topic Phase Transition Temperature
Unable to display preview. Download preview PDF.
- J. Van Humbeeck, Adv. Eng. Mater. 3, 11 (2001) Google Scholar
- S.M. Barrans, Q. Xu, E.M. Ghurbal, ABAQUS UK User's Group Conference (2001) Google Scholar
- R. Dunlop, A.C. Garcia, Proc. Australasian Conference on Robotics and Automation (Auckland, 2002) Google Scholar
- E. Asua, V. Etxebarria, A. García-Arribas, Proc. IEEE Conf. Control Applications (Munich, Germany, 2006), pp. 3229–3234 Google Scholar
- www.dynalloy.com Google Scholar
- Standard Test Method for Tensile Strength and Young's Modulus for High-Modulus Single-Filament Materials, ASTM International, 3379-75, United States (1989) Google Scholar
- P. Terriault, F. Viens, V. Brailovski, Comput. Mater. Sci. 36, 397 (2006) Google Scholar
- F. Auricchio, R. Taylor, Comput. Meth. Appl. Mech. Eng. 143, 175 (1997) Google Scholar
- N. Rebelo, N. Walker, H. Foadian, ABAQUS User's Conference (2001) Google Scholar