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Self-Excited Vibration of a Hydraulic Turbine
Journal of Engineering for Power, 1967Severe vibration of a hydraulic turbine was found to be self-excited. Vibration at the natural frequency when operating at synchronous speed produced self-sustaining whirl of the shaft. Gyroscopic action of the turbine runner caused the vibration to be self-excited.
C. C. Crawford, F. O. Ruud
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On Self-Excited Friction Vibrations in Brakes
Volume 3A: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration of Nonlinear, Random, and Time-Varying Systems, 1995Abstract Dynamic processes in machines resulting from the interaction between rough rubbing surfaces are called self-excited friction vibrations in the theory of vibrations. Such vibrations are generated in machines brakes, causing the instability of then-operation and various noise effects.
Fedor R. Gekker, Serik I. Khairaliev
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2018 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2017
This paper presents a novel valve for switching the pressure modes of to chambers by self-excited vibration instead of using electricity. The valve has a simple structure consisting of flexible tubes and small permanent magnets, which can be fabricated ...
Y. Miyaki, H. Tsukagoshi
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This paper presents a novel valve for switching the pressure modes of to chambers by self-excited vibration instead of using electricity. The valve has a simple structure consisting of flexible tubes and small permanent magnets, which can be fabricated ...
Y. Miyaki, H. Tsukagoshi
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Self-Excited Vibrations in Metal Cutting
Journal of Engineering for Industry, 1959The basic mechanisms which cause self-excited vibrations of a cutting tool relative to the work are discussed in a qualitative manner. Similarly, mechanisms inherent in the cutting process which can damp or limit vibrations are discussed. Experiments are presented which are in agreement with the theory.
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Journal of Wind Engineering and Industrial Aerodynamics, 2022
Mingjie Zhang, Fuyou Xu
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Mingjie Zhang, Fuyou Xu
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Differential evolution for system identification of self-excited vibrations
Journal of Computational Science, 2015This study uses a differential evolution method to identify the coefficients of second-order differential equations of self-excited vibrations from a time signal. The motivation is found in the frequent occurrence of this vibration type in physics and engineering. In the proposed method, an equation structure is assumed at the level of the differential
Christiaan D. Erdbrink +1 more
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Vibration Characteristics of Self-excited Vibration About Sliding Bearings
2020This paper shows vibration characteristics of a sliding bearings. Especially, we study self-excited vibration (Oil whirl) of the sliding bearings. We tried three analysis methods, which are trajectory of shaft vibration and tracking analysis, and particle number of wear debris in lubricant generated by direct contact between a shaft and outer race of ...
Ryosuke Fukui +5 more
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Design of a Screw Jack Mechanism to Avoid Self-excited Vibrations
Journal of Dynamic Systems, Measurement, and Control, 2002This paper deals with vibratory phenomena that are encountered in screw jack mechanisms, down-motion especially. One can find many practical instances where such mechanisms are subject to vibratory conditions. Besides producing loud noise, vibrations can easily damage the mechanism.
GALLINA, PAOLO, GIOVAGNONI M.
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Light-fueled self-excited vibration of a liquid crystal elastomer spring oscillator
Journal of Sound and Vibration, 2022Fenghui Gan, Quanbao Cheng, Kai Li
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