International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

Volume2,May 2017,

Topic : Optimal use of Magnetostrictive Material (Tb0.3Dy0.7Fe1.95) in Actuator Applications

Authors:Shivakumar S Y || Dr Raghavendra Joshi, Chand Babu,Nishay K R, Mahesh Kulgeri

Abstract:Recently giant magnetostriction materials have drawn a lot of attentions because of their unique features like outstanding magnetostriction, high energy density, high Curie temperature and quick response compared to PZT materials. Actuators using magnetostrictive materials show great potential due to their high forces and short reaction times for applications on heavy and stiff structures such as in aeronautics, civil structures and machine tools. In this paper the design of magnetostrictive actuator with suitable number of coil turns and as well as layout of actuator has been discussed. The attempt is being done to give systematic design procedure focusing on electric, magnetic, thermal and mechanical aspects.The analytical expressions such as equivalent magnetic circuit equation ,flux,magnetic field intensity,shape factor of coils,peak to peak expression for magnetic field intensity and as well as for driving current,number of coil turns and different losses in a actuator for the optimal usage of magnetostrictive materials in the applications of actuator has been outlined.The relevance of the leakage inductance of the actuator and the choice of feeding amplifiers affecting the dimensioning actuator drive coils are illustrated.

Keywords: magnetostriction, Curie temperature, magnetostrictiveactuator,shapefactor,leakage inductance

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DOI: 01.1617/vol4/iss5/pid41567


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Journal Code : IJERMCE
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