NDLI: Development and Validation of a Bidirectional Magneto-Mechanical Coupled Actuator Model

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Frank, C. Graham Mudivarthi, Chaitanya Datta, Supratik Alison, B. Flatau
Copyright Year	2008
Abstract	The bidirectionally coupled magnetoelastic model (BCMEM) developed by [1] has been modified to include electric currents in its magnetic finite element formulation. This enables the model to capture the magnetoelastic behavior of magnetostrictive materials subjected to elastic stresses and magnetic fields applied not only by permanent magnets but also by current carrying coils used often in actuator applications. This model was implemented by combining COMSOL Multiphysics 3.4 (Finite Element Modeling software) with an energy-based non-linear magnetomechanical constitutive model. The coupling variables are magnetostriction and magnetic permeability that are dependent on both magnetic (magnetic flux density) and mechanical (stress) properties. In this research, the BCMEM was used to simulate actuator load lines for a magnetostrictive Fe84Ga16 alloy, which were then compared to experimental data [2]. Also, the ability of the model to capture the presence of the ΔE effect in Galfenol was demonstrated using the BCMEM. Finally, the use of the BCMEM to as a tool for transducer design optimization is demonstrated by using the model to visualize the influence of different magnetic circuit designs on transducer performance.
Sponsorship	Aerospace Division
Starting Page	525
Ending Page	534
Page Count	10
File Format	PDF
ISBN	9780791843314
DOI	10.1115/SMASIS2008-565
e-ISBN	9780791838396
Volume Number	Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1
Conference Proceedings	ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
Language	English
Publisher Date	2008-10-28
Publisher Place	Ellicott City, Maryland, USA
Access Restriction	Subscribed
Subject Keyword	Actuators Magnetic induction Transducers Circuit design Magnetostriction Computer software Alloys Permanent magnets Permeability Modeling Stress Optimization Design Finite element analysis Magnetic fields Electric current Constitutive equations
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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