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Published in:
2015 | OriginalPaper | Chapter
Analysis and Modelling of Magnetic Circuits in Magnetic Shape Memory Alloy Actuators
Authors : Bartosz Minorowicz, Cezary Jędryczka, Frederik Stefański, Amadeusz Nowak
Published in: Progress in Automation, Robotics and Measuring Techniques
Publisher: Springer International Publishing
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Authors presented in article modeling of magnetic circuit for magnetic shape memory alloys. These alloys are a new class of smart materials which can generate strains and force in external magnetic field. Thus that properties MSMA fill gap between classical SMA and magnetostrictive materials. As a drawbacks strong nonlinearities should be mentioned: wide asymmetric hysteresis loop, thermal sensitivity, first cycle effect. Very high flux density need for effective operation over the whole range strongly affects on size of the magnetic circuit. Mathematical modeling does not allow for design optimal shape of core. Authors aided their work by FEA of magnetic flux in core. Computed results were compared with magnetic induction measured on prepared test bench.