Resonance Frequency and Stiffness of Magnetic Bead Chain in Magnetic Field

Hiroyuki Kawamoto, Nobuyuki Nakayama, Satoshi Yamada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    Experimental, theoretical, and numerical investigations have been carried out to evaluate resonance frequency and stiffness of a magnetic bead chain in the magnetic filed. Chains formed on a solenoid coil were vibrated by the sine-wave excitation and impact methods and the resonance frequency was deduced. It showed little dependency on the magnetic flux density and the bead diameter, because both the equivalent stiffness and the chain length were large in accordance with the increase of the magnetic flux density. These characteristics were confirmed by a theoretical consideration based on an assumption of potential energy minimization and a numerical calculation with the Distinct Element Method. Stiffness of the chain was directly measured by observation of chain deflection in inclined gravitational field and it also confirmed the dynamically deduced characteristics. It was concluded that the resonance frequency was 20-60 Hz and the static stiffness at the top of the chain was 10-4-10-2 N/m. The investigation is utilized for the improvement of the two-component magnetic blush development subsystem in electrophotography.

    Original languageEnglish
    Title of host publicationInternational Conference on Digital Printing Technologies
    Pages28-35
    Number of pages8
    Publication statusPublished - 2002
    EventIS and T's NIP18: International Conference On Digital Printing Technologies - San Diego, CA
    Duration: 2002 Sep 292002 Oct 4

    Other

    OtherIS and T's NIP18: International Conference On Digital Printing Technologies
    CitySan Diego, CA
    Period02/9/2902/10/4

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    ASJC Scopus subject areas

    • Media Technology

    Cite this

    Kawamoto, H., Nakayama, N., & Yamada, S. (2002). Resonance Frequency and Stiffness of Magnetic Bead Chain in Magnetic Field. In International Conference on Digital Printing Technologies (pp. 28-35)