Experimental and Theoretical Study on Magnetoelastic Buckling of a Ferromagnetic Cantilevered Beam-Plate

[+] Author and Article Information
K. Miya, K. Hara, K. Someya

Nuclear Engineering Research Laboratory, University of Tokyo, Japan

J. Appl. Mech 45(2), 355-360 (Jun 01, 1978) (6 pages) doi:10.1115/1.3424301 History: Received May 01, 1977; Revised October 01, 1977; Online July 12, 2010


When a cantilever of magnetically soft material is inserted with its wide face normal to a uniform magnetic field and the magnetic field is increased to a critical value the cantilever will buckle. The experimental magnetoelastic buckling fields and the theoretical ones differ by a factor of two. A magnetic field distortion near an edge of the specimen is here evaluated based on the finite-element method and the results are applied to the experimental results so as to explain the discrepancy between the experiment and the theory. The corrected experimental values are within 15 percent of the theoretical values. The effect of demagnetization on the buckling field is here demonstrated as well as the effect of specimen dimensions.

Copyright © 1978 by ASME
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