Influence of Unequal Pedestal Stiffness on the Instability Regions of a Rotating Asymmetric Shaft : 4th Report, Further Considerations of an Approximate Analysis

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概要

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• The approximation previously proposed by the authors is applied to an analysis of unstable vibrations of a rotating asymmetrical shaft supported by asymmetrically flexible bearing pedestals. A frequency equation is represented by a determinant of the 4th order, 8th order, or 12th order, according as a directional inequality of bearing pedestal stiffness is negligibly small, small but considerable, or not small. Instability regions are obtained by solving each frequency equation. No matter what the directional inequality of stiffness of bearing pedestal may be, the position, width and number of instability regions can be sufficiently determined by use of the determinant of the 8th order. Instability regions derived from approximation are found to agree well with those obtained by an analog computer.

• 一般社団法人日本機械学会の論文

著者

• Ota H

  Hitachi Instrument Engineering Co. Ltd. Ibaraki Jpn

• Kawai Tadao

  Faculty Of Engineering Mie University

• OTA Hiroshi

  Faculty of Engineering, Nagoya University

• MIZUTANI Kazuki

  Faculty of Engineering, Mie University

• Mizutani K

  Mie Univ. Tsu Jpn

• Mizutani Kazuki

  Faculty Of Engineering Mie University

• Ota Hiroshi

  Faculty Of Engineering Nagoya University

• Ota Hiroshi

  Faculty Of Engineering Gunma University

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