By Institution of Mechanical Engineers
This ebook offers the papers from the tenth foreign convention on Vibrations in Rotating equipment. This convention, first held in 1976, has outlined and redefined the state of the art within the many points of vibration encountered in rotating equipment. unique through a good mixture of business and educational participation accomplished, those papers current the newest equipment of theoretical, experimental and computational rotordynamics, along the present problems with hindrance within the extra improvement of rotating machines. issues are geared toward propelling ahead the factors of excellence within the layout and operation of rotating machines.
- Presents most up-to-date equipment of theoretical, experimental and computational rotordynamics
- Covers present problems with situation within the additional improvement of rotating machines
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Additional resources for 10th International Conference on Vibrations in Rotating Machinery: 11-13 September 2012, Imeche London, UK
Blade loss probe / Shear pin Figure 7. 1 Measurement of bearing forces There are different ways to measure the rotor response to an unbalance excitation. The common practice is to use displacement sensors to identify the shaft distortion. However, when the rotor shows a rigid behaviour it is necessary to provide an alternative measuring concept. An example of such a rigid rotor is the shaft of the prototype of the whole engine simulator whose first natural frequency amounts to approximately 300 Hz.
Sˆnm (t ) Anm (24) It has been shown that the quadrature demodulation process effectively extracts the components of the instantaneous amplitude relative to the tracked oscillating component, e im ( t ) . (11) can be applied. (11) (which is essentially the Discrete Fourier transform) are ND specific parts of the extracted orders with m ( t ) positive and negative progressing waves. These orders denoted orderk , ordermk ( t ) to indicate forward and backward travel direction. The proposed method is shown below in a pictorial representation.
Mote, "Vibration and parametric excitation in asymmetric circular plates under moving loads," Journal of Sound and Vibration, vol. 119, pp. 409-427, 1987. I. Bucher, O. Shomer, and H. Raz, "C623/077/2004 Active diagnostics of rotating structures," IMECHE CONFERENCE TRANSACTIONS, vol. 2, pp. 531540, 2004. O. Shomer and I. Bucher, "SYSTEM AND METHOD FOR ACTIVE DETECTION OF ASYMMETRY IN ROTATING STRUCTURES," ed: EP Patent 1,904,975, 2008. G. Schweitzer and E. H. Maslen, Magnetic bearings: theory, design, and application to rotating machinery: Springer Verlag, 2009.
10th International Conference on Vibrations in Rotating Machinery: 11-13 September 2012, Imeche London, UK by Institution of Mechanical Engineers