Active and structural strain model for magnetostrictive transducers

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

doi:10.1117/12.316893

27 July 1998 Active and structural strain model for magnetostrictive transducers

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

Proceedings Volume 3329, Smart Structures and Materials 1998: Smart Structures and Integrated Systems; (1998) https://doi.org/10.1117/12.316893
Event: 5th Annual International Symposium on Smart Structures and Materials, 1998, San Diego, CA, United States

Abstract

We consider the modeling of strains generated by magnetostrictive materials in response to applied magnetic fields. The active or external component of the strain is due to the rotation of magnetic moments within the material to align with the applied field. This is characterized through consideration of the Jiles-Atherton mean field theory for ferromagnetic hysteresis in combination with a quadratic moment rotation model for magnetostriction. The second component of the strain reflects the passive or internal dynamics of the rod as it vibrates. This is modeled through force balancing which yields a wave equation with magnetostrictive inputs. The validity of a combined transducer model is illustrated through comparison with experimental data.

Citation Download Citation

Marcelo J. Dapino, Ralph C. Smith, and Alison B. Flatau "Active and structural strain model for magnetostrictive transducers", Proc. SPIE 3329, Smart Structures and Materials 1998: Smart Structures and Integrated Systems, (27 July 1998); https://doi.org/10.1117/12.316893

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