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The magnetostrictive mini-actuator (MMA), with its unique characteristics such as large strain, high force and high energy density, is potentially a new class of actuator most suitable for distributed actuator applications such as vibration control of smart structures. The authors present a theoretical framework, validated experimentally, to develop an MMA and its feasibility for vibration control. Based on two-dimensional thermal analysis, the general form of thermoelastic mathematical model for characterizing magnetostrictive-based actuators is proposed and experimentally validated. Thermal effects, at other than the initial state, are shown to have a significant effect on attainable strain and force of an MMA. Experimental results show that the MMA has good static and dynamic performance, and is suitable for applications in smart structures.
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Anjanappa et al. (1994) studied this question.
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