New PDF release: 10th International Conference on Vibrations in Rotating
By Institution of Mechanical Engineers
This ebook offers the papers from the tenth foreign convention on Vibrations in Rotating equipment, held in London, September 2012. because the first assembly during this sequence was once held in 1976, it has outlined and re-defined what's "state of the artwork" within the many facets of vibration encountered in all sorts of rotating equipment. A defining attribute of the convention is the combination of commercial and educational themes of the papers offered. The ensuing interactions have made it a distinct discussion board for dialogue within which the newest tools of theoretical, experimental and computational rotordynamics are uncovered along the present problems with quandary within the extra improvement of rotating machines.
Read or Download 10th International Conference on Vibrations in Rotating Machinery: 11-13 September 2012, IMechE London, UK PDF
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Additional info for 10th International Conference on Vibrations in Rotating Machinery: 11-13 September 2012, IMechE London, UK
Pierre, P. Cartraud, and B. Peseux, "n-dimensional Harmonic Balance Method extended to non-explicit nonlinearities," 2006. A. Sternchüss, E. Balmes, P. Jean, and J. P. Lombard, "Reduction of Multistage disk models: application to an industrial rotor," Journal of Engineering for Gas Turbines and Power, vol. 131, p. 012502, 2009. E. Balmes and I. Bucher, "Accounting for rotation in a multi-stage cyclosymmetric model-a case study," 2010. I. Bucher and D. Ewins, "Multidimensional decomposition of time-varying vibration response signals in rotating machinery," Mechanical Systems and Signal Processing, vol.
The rich dynamics of rotating machines makes it difficult to isolate particular vibratory modes from typical measured signals. It turns out that rotating structures have some unique features that can be exploited to isolate otherwise hidden signal-components when suitable model-based signal processing methods are employed. Two main features of rotating structures become useful for model-based signal processing and identification: (i) The inherent polar cyclic–symmetry of typical machines and (ii) Rotation which creates relative motion with respect to the foundation or sensors.
48 Low Pressure Shaft (LPC and LPT) High Pressure Shaft (HP) Figure 1. 2 Casing As it has already been mentioned, the casing structure of modern aero engines is not optimal for the measurement of vibrations. The structure usually is encapsulated in order to guide the air-flow and uses excessive integral construction to reduce the weight of the engine. All these characteristics limit the accessibility of the major parts. Especially the rotors and bearings that are of great interest in rotor dynamic investigations are difficult to reach.
10th International Conference on Vibrations in Rotating Machinery: 11-13 September 2012, IMechE London, UK by Institution of Mechanical Engineers