Influence of Unegual Pedestal Stiffness on the Instability Regions of a Rotating Asymmetric Shaft : 2nd Report, Inclinational Vibrations with Effects of Gyroscopic Action

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概要

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• The gyroscopic action of a rotor tends to split up the unstable regions which results mainly from the asymmetry of shaft stiffness Δ into several parts by the inequality of bearing stiffness ε. The analysis of this problem is carried out on the assumption that the coefficient of gyroscopic term i_p is as small as ε and Δ, or i_p is larger than both ε and Δ. The position, width and number of unstable regions are analytically determined. As the value i_p increases, the higher side of the split unstable regions becomes larger, but the lower side becomes smaller. The analytical results obtained with the approximation that i_p is large in comparison with both ε and Δ show a good coincidence with results obtained by an analog computer.

• 一般社団法人日本機械学会の論文

著者

• OTA Hiroshi

  Faculty of Engineering, Nagoya University

• Miwa Masao

  Mitsubishi Heavy Industries Co.

• Mizutani Kazuki

  Faculty Of Engineering Mie University

• Mizutani Kazuki

  Faculty Of Engineering Nagoya University

• Ota Hiroshi

  Faculty Of Engineering Gunma University

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