Dynamics modeling of ferromagnetic shape memory alloys (FSMA) actuators

Honghao Tan; Mohammad H. Elahinia

doi:10.1117/12.655629

5 April 2006 Dynamics modeling of ferromagnetic shape memory alloys (FSMA) actuators

Honghao Tan, Mohammad H. Elahinia

Proceedings Volume 6173, Smart Structures and Materials 2006: Smart Structures and Integrated Systems; 617308 (2006) https://doi.org/10.1117/12.655629
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2006, San Diego, California, United States

Abstract

FSMAs like Ni₂MnGa have attracted significant attention over the last few years. As actuators, these materials offer high energy density, large stroke, and high bandwidth. These properties make FSMAs potential candidates for developing Solid-Fluid Hybrid Actuations (SFHA), where the FSMA actuator provides the mechanical energy by the linear reversible displacements. In order to develop effective hydraulic pumps with the FSMA actuators, it is important to study the dynamic behavior in these materials. In this paper, a dynamic model is presented for an Ni₂MnGa actuator. The Ni₂MnGa actuator model consists of the dynamics of the actuator, kinematics of the actuator, constitutive model of the material, and reorientation kinetics. A constitutive model is proposed to take into account the elastic deformation as well as the reorientation. Simulations results are presented to demonstrate the dynamic behavior of the actuator.

Citation Download Citation

Honghao Tan and Mohammad H. Elahinia "Dynamics modeling of ferromagnetic shape memory alloys (FSMA) actuators", Proc. SPIE 6173, Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 617308 (5 April 2006); https://doi.org/10.1117/12.655629

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