• DocumentCode
    1052087
  • Title

    Optimum permanent-magnet dimensions for repulsion applications

  • Author

    Cooper, Richard K. ; Neil, V.Kelvin ; Woodruff, Wayne R.

  • Author_Institution
    California State University, Hayward, Calif
  • Volume
    9
  • Issue
    2
  • fYear
    1973
  • fDate
    6/1/1973 12:00:00 AM
  • Firstpage
    125
  • Lastpage
    127
  • Abstract
    The repulsive force between identical right-circular-cylindrical permanent magnets is calculated, and the ratio of this force to the weight of a magnet is maximized through optimization of magnet size and shape. It is assumed that the magnets are uniformly magnetized along their axes. For magnets of thickness t and radius R , separated by a distance 2h , the optimum dimensions are R = 3.45h and t = 2.7h . For these dimensions, the repulsive magnetic force has the value 2.65 \\mu_{0}M^{2}h^{2} newtons, with the magnetization M in At/m and h in meters.
  • Keywords
    Permanent magnets; Cobalt; Force measurement; Kelvin; Magnetic forces; Magnetic levitation; Magnetic materials; Magnetic separation; Magnetization; Permanent magnets; Shape;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1973.1067575
  • Filename
    1067575
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1052087