JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN
Online ISSN : 1884-4758
Print ISSN : 0388-3051
ISSN-L : 0388-3051
Volume 2 , Issue 3
Showing 1-6 articles out of 6 articles from the selected issue
  • [in Japanese], [in Japanese]
    1967 Volume 2 Issue 3 Pages 105-110
    Published: 1967
    Released: May 31, 2010
    JOURNALS FREE ACCESS
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  • [in Japanese]
    1967 Volume 2 Issue 3 Pages 111-119
    Published: 1967
    Released: May 31, 2010
    JOURNALS FREE ACCESS
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  • [in Japanese], [in Japanese], [in Japanese]
    1967 Volume 2 Issue 3 Pages 120-128
    Published: 1967
    Released: May 31, 2010
    JOURNALS FREE ACCESS
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  • [in Japanese]
    1967 Volume 2 Issue 3 Pages 129-130
    Published: 1967
    Released: May 31, 2010
    JOURNALS FREE ACCESS
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  • [in Japanese]
    1967 Volume 2 Issue 3 Pages 131-135
    Published: 1967
    Released: May 31, 2010
    JOURNALS FREE ACCESS
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  • Masahiko Akazawa, Minoru Honda
    1967 Volume 2 Issue 3 Pages S35-S47
    Published: 1967
    Released: May 31, 2010
    JOURNALS FREE ACCESS
    The marine geared diesel propulsion systems are becoming extremely complex, with the increasing adoption of such arrangements as multi-drive systems and main engine driven auxiliaries, and the incorporation of such elements as highly damped flexible couplings and dampers.
    The article presents an analysis performed on digital computor concerning the steady-state forced torsional vibration in a multi-mass-elastic, multi-branch linear vibratory system with damping. The damping was considered individually for each machine element, and phasing was taken into account in the culculations which extended over the entire range of service speed.
    Some examples of calculation are given together with results of measurement, covering cases of geared diesel shafting systems equiped with either Geislinger flexible coupling or hydraulic coupling.
    It was found that the Geislinger coupling has distinct damping effect, the aspects of vibration differing in consequence quite markedly from undamped vibration. The hydraulic coupling was treated as part of an integral shafting between engine and propeller by the introduction of a spring constant representing the coupling, and the calculations proved that a vibration was induced on the intermediate shaft by the engine, this was substantiated by actual measurements. Accumulation of similar results of analysis should contribute to gaining a better knowledge of the damping in machine elements.
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