Strain behavior of magnetostrictive particulate composites

William D. Armstrong

doi:10.1117/12.352796

12 July 1999 Strain behavior of magnetostrictive particulate composites

William D. Armstrong

Proceedings Volume 3675, Smart Structures and Materials 1999: Smart Materials Technologies; (1999) https://doi.org/10.1117/12.352796
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

A new theory is presented of the nonlinear magneto-elastic behavior of magnetically dilute magnetostrictive particulate composites. The theory assumes a uniform external magnetic field is operating on a large number of well distributed, crystallographically and shape parallel ellipsoidal magnetostrictive particles encased in an elastic, nonmagnetic composite matrix. The aspect ratio of the particulates may vary between 1 to infinity and the volume fraction of the particulates may vary between zero and one. Example calculations show that the model is able to provide qualitatively correct magnetostriction curves for both homogeneous Terfenol-D rod and experimental Terfenol-D particulate actuated epoxy matrix composites.

Citation Download Citation

William D. Armstrong "Strain behavior of magnetostrictive particulate composites", Proc. SPIE 3675, Smart Structures and Materials 1999: Smart Materials Technologies, (12 July 1999); https://doi.org/10.1117/12.352796

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