Lateral Vibrations of an Asymmetrical Shaft Driven by a Universal Joint : 1st Report, Generation of Unstable Vibration and Expansion of Unstable Region by Angular Velocity Fluctuation

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概要

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• Vibrations of a driven shaft with asymmetrical stiffness are governed by simultaneous equations with parametric excitation. The equations of motion are analyzed by the asymptotic method, and the characteristics of vibration are explained. When the shaft rotates near the major critical speed, the fluctuation of angular velocity generates an unstable vibration whirling backward in addition to that whirling forward, and it expands the unstable region. When the shaft rotates up to nearly half of the major critical speed, the fluctuation causes an unstable region which separates into three regions. In the mid region the shaft undergoes an unstable vibration which has a complex change of amplitude and frequency; in the other two regions it undergoes unstable vibrations which have amplitude increasing monotonously and constant frequency.

• 一般社団法人日本機械学会の論文

著者

• Kato Masayoshi

  Faculty Of Eng. Science Univ. Of Tokyo

• Mizuno Masahiko

  Toyota Central Research & Development Laboratories Inc.

• OTA Hrroshi

  Faculty of Engineering, Nagoya University

• Mizuno Masahiko

  Toyota Central R&d Labs. Inc.

• Ota Hrroshi

  Faculty Of Engineering Nagoya University

• KATO Masayoshi

  Faculty of Agriculture, Tokyo University of Agriculture

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• Lateral Vibrations of a Rotating Shaft Driven by a Universal Joint : 2nd Report, Analyses and Experiments on Even Multiple Vibrations by Secondary Moment
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• Lateral Vibrations of an Asymmetrical Shaft Driven by a Universal Joint : 1st Report, Generation of Unstable Vibration and Expansion of Unstable Region by Angular Velocity Fluctuation
• Lateral Vibrations of a Rotating Shaft Driven by a Universal Joint : 1st Report, Generation of Even Multiple Vibrations by Secondary Moment
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