Modeling of Magnetic Shape Memory Alloys Plates

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Naderi, Hossein | 2018

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 51737 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Sayyaadi, Hassan
Abstract:
Magnetic shape memory alloys (MSMAs) are a new class of smart materials which exhibit properties such as large reversible strains and high performance frequencies. These unique properties, offer magnetic shape memory alloys as an option in applications such as actuators, sensors and energy harvesters. In this thesis, the equations of magnetic shape memory alloys by considering nonlinear terms of Von karaman in strain-displacement relations, is expanded by using the theory of thin plates in two dimensions which can be used for plate equations with any boundary conditions by applying elastic boundary. In order to verify the obtained model, the equations of motions of magnetic shape memory alloys for clamped thin films are solved and results are compared with experimental data. In this study, by solving the obtained equations, the transverse displacement of the plate and changes of magnetization under uniform pressure and for different boundary conditions, are obtained which can be used as a pressure sensor. The obtained model has a good ability to determine the magnetization-strain behaviour of magnetic shape memory alloys
Keywords:
Magnetic Shape Memory Alloys (MSMA) ; Energy Harvesting ; Pressure Sensor ; Magneto-Mechanical Loading

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