Coupled structural-magnetic strain model for magnetostrictive transducers

Marcelo J. Dapino; Ralph C. Smith; Alison B. Flatau

doi:10.1117/12.350719

9 June 1999 Coupled structural-magnetic strain model for magnetostrictive transducers

Marcelo J. Dapino, Ralph C. Smith, Alison B. Flatau

Proceedings Volume 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems; (1999) https://doi.org/10.1117/12.350719
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

The growing interest in giant magnetostrictive materials for generation of strains in smart structure systems motivates the development of increasingly accurate performance prediction and optimization tools. We propose a model for the strains generated by magnetostrictive materials in response to applied magnetic fields. The direct or magnetostrictive effect is modeled by considering active and passive components of the strain. The active or external component, associated with the alignment of magnetic moments with the external magnetic field, is modeled with a ferromagnetic hysteresis model in combination with a quartic magnetostriction law. The passive or internal component, associated with the elastic response of the transducer materials as they vibrate, is modeled through force balancing which yields a wave equation with magnetostrictive inputs. The effect of stress on the magnetization of the magnetostrictive core, or the magnetomechanical effect, is implemented by considering a `law of approach' to the anhysteretic magnetization caused by stress. This provides a representation of the bi-directional coupling between the magnetic and elastic states. It is demonstrated that the model accurately characterizes the magnetic hysteresis and the strains output by a prototyping transducer.

Citation Download Citation

Marcelo J. Dapino, Ralph C. Smith, and Alison B. Flatau "Coupled structural-magnetic strain model for magnetostrictive transducers", Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); https://doi.org/10.1117/12.350719

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available