Unstable Vibrations Induced by Rotationally Unsymmetric Inertia and Stiffness Properties
スポンサーリンク
概要
- 論文の詳細を見る
In a rotating shaft system carrying an unsymmetrical rotor, or in a shaft with unequal stiffness, there occur two kinds of unstable vibrations. One is so called "statically unstable vibration" and the other is "dynamically unstable vibration" in the neighborhood of rotating speeds of shaft w_c and w_d, respectively. By solving numerically a frequency equation, we have been able to obtain exact values of the width of the unstable region and the negative damping coefficient. And also we could obtain the approximate values of them by applying the Taylor's expansion theorem to the frequency equation nearly about the rotating speeds w_c and w_d severally. In this paper, the authors deal with these unstable vibrations by considering an input energy from shaft end into the system. By this treatment we made clear the physical meaning and occurrence of these unstable vibrations. The approximate results derived from energy consideration coincide fairly well with exact results obtained by numerical calculation.
- 一般社団法人日本機械学会の論文
著者
-
OTA Hiroshi
Faculty of Engineering, Nagoya University
-
Kono Kazutoyo
Faculty Of Engineering Nagoya University
-
Ota Hiroshi
Faculty Of Engineering Nagoya University
-
Ota Hiroshi
Faculty Of Engineering Ngoya University
-
Ota Hiroshi
Faculty Of Engineering Gunma University
関連論文
- Regenerative Chatter Vibrations of Turning Workpieces : Two Degrees of Freedom and Their Stability Criteria
- On the Occurrence of Regenerative Chatter Vibrations : Vibration, Control Engineering, Engineering for Industry
- Influence of Unequal Pedestal Stiffness on the Instability Regions of a Rotating Asymmetric Shaft : 4th Report, Further Considerations of an Approximate Analysis
- On Elimination of the Unstable Region of the Major Critical Speed in a Rotating Shaft System Carrying an Unsymmetrical Rotor : Dynamical Effect of a Flexible Pedestal or Added Mass on the Shaft
- Oxidation Behavior and Caking Property of Coal under the Atmosphere at Low Oxygen Concentration
- Lateral Vibrations of a Rotating Shaft Driven by a Universal Joint : 2nd Report, Analyses and Experiments on Even Multiple Vibrations by Secondary Moment
- Experiments on Vibrations of a Hollow Rotor Partially Filled with Liquid
- Lateral-Torsional Coupled Vibrations of a Rotating Shaft Driven by a Universal Joint : Derivation of Equations of Motion and Asymptotic Analyses
- Lateral Vibrations of a Rotating Shaft Driven by a Universal Joint : 1st Report, Generation of Even Multiple Vibrations by Secondary Moment
- Lateral Vibrations of an Asymmetrical Shaft Driven by a Universal Joint : 3rd Report, Analyses and Experiments on Forced Vibrations of Horizontal Shaft Caused by Gravity
- Lateral Vibrations of a Rotating Shaft Driven by a Universal Joint : 3rd Report, Vibrations Caused by Frictions between a Cross-Pin and Yokes : Series C : Vibration, Control Engineering, Engineering for Industry
- Lateral Vibrations of an Asymmetrical Shaft Driven by a Universal Joint : 2nd Report, Generation Mechanism of Unstable Vibrations
- On Vibrations of a Rotor with Variable Rotating Speed
- Unstable Vibrations Induced by Rotationally Unsymmetric Inertia and Stiffness Properties
- Chatter Vibrations of Machine Tool or Work with Directional Stiffness Inequality
- The Effect of a Flat Shaft on the Unstable Vibrations of the Shaft Carrying an Unsymmetrical Rotor
- Influence of Unequal Pedestal Stiffness on the Instability Regions of an Asymmetrical Rotor
- Influence of Unequal Pedestal Stiffness on the Instability Regions of a Rotating Asymmetric Shaft : 3rd Report, Mechanism for Occurrence of Two Types of Unstable Vibrations
- On the Shaft End Torque and the Forced Vibrations of an Asymmetrical Shaft Carrying an Asymmetrical Rotor
- Influence of Unegual Pedestal Stiffness on the Instability Regions of a Rotating Asymmetric Shaft : 2nd Report, Inclinational Vibrations with Effects of Gyroscopic Action
- On the Shaft End Torque and the Unstable Vibrations of an Asymmetrical Shaft Carrying an Asymmetrical Rotor
- Self-Excited Vibrations of Wire-Winding-Type Growing Apparatus for Silicon Single Crystals : Experimental Results and Considerations Relevant to Self-Excited Vibrations
- On the Vibrations of the Shaft Carrying an Asymmetrical Rotating Body
- Unstable Vibrations of the Shaft Carrying an Unsymmetrical Rotating Body : Vibrations Induced by Flexibility of Bearing Pedestals
- Elastic and Damping Properties of Journal Bearing : 1st Report, Stationary Properties of Oil Film Bearing by Finite Bearing Approximation
- On the Forced Vibrations of the Shaft Carrying an Unsymmetrical Rotor : Forced Vibrations Having the Circular Frequencies Differing from the Rotating Angular Velocity of the Shaft
- On the Forced Vibrations of the Shaft Carrying an Unsymmetrical Rotating Body : Response Curves of the Shaft at the Major Critical Speeds