Coupling of mechanical dynamics and induced currents in a cantilever beam

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Description

Electrical eddy currents induced in a conducting structure subjected to a background magnetic field produce forces which may result in significant mechanical reactions and deflections. The dynamics of the conductive structure are modified by additional eddy currents which are induced by the structural motion. Frequently, the observed effects of these secondary eddy currents are referred to as magnetic damping and magnetic stiffness. A coupled system of equations was formulated using finite element techniques for the mechanical aspects and a mesh network method for the electrical aspects of the problem. The eigenvalues of the governing equations are examined using the background ... continued below

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Pages: 38

Creation Information

Bialek, J.M. & Weissenburger, D.W. January 1, 1985.

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Description

Electrical eddy currents induced in a conducting structure subjected to a background magnetic field produce forces which may result in significant mechanical reactions and deflections. The dynamics of the conductive structure are modified by additional eddy currents which are induced by the structural motion. Frequently, the observed effects of these secondary eddy currents are referred to as magnetic damping and magnetic stiffness. A coupled system of equations was formulated using finite element techniques for the mechanical aspects and a mesh network method for the electrical aspects of the problem. The eigenvalues of the governing equations are examined using the background magnetic field as a parameter, and the solution of the equations is presented for a sample problem. The expected effects of magnetic damping and magnetic stiffness are observed in the solutions of the coupled equations.

Physical Description

Pages: 38

Notes

NTIS, PC A03/MF A01.

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  • Other: DE85007209
  • Report No.: PPPL-2187
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/6089020 | External Link
  • Office of Scientific & Technical Information Report Number: 6089020
  • Archival Resource Key: ark:/67531/metadc1106875

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1985

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

Description Last Updated

  • May 11, 2018, 2:52 p.m.

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Bialek, J.M. & Weissenburger, D.W. Coupling of mechanical dynamics and induced currents in a cantilever beam, report, January 1, 1985; New Jersey. (digital.library.unt.edu/ark:/67531/metadc1106875/: accessed May 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.