By Institution of Mechanical Engineers
This publication provides the papers from the tenth overseas 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 paintings" within the many features of vibration encountered in all sorts of rotating equipment. A defining attribute of the convention is the combo of commercial and educational themes of the papers awarded. The ensuing interactions have made it a special discussion board for dialogue within which the newest tools of theoretical, experimental and computational rotordynamics are uncovered along the present problems with difficulty within the additional improvement of rotating machines.
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Additional info for 10th International Conference on Vibrations in Rotating Machinery: 11-13 September 2012, IMechE London, UK
Ferraris, "Rotordynamics: Prediction in Engineering," Recherche, vol. 67, p. 02, 1998. J. Y. Chang and J. A. Wickert, "Response of modulated doublet modes to travelling wave excitation," Journal of Sound and Vibration, vol. 242, pp. 6983, Apr 19 2001. J. H. Suh, S. W. Hong, and C. W. Lee, "Modal analysis of asymmetric rotor system with isotropic stator using modulated coordinates," Journal of Sound and Vibration, vol. 284, pp. 651-671, 2005. G. Genta, C. Feng, and A. Tonoli, "Dynamics behavior of rotating bladed discs: A finite element formulation for the study of second and higher order harmonics," Journal of Sound and Vibration, vol.
46] I. Bucher and O. Shomer, "Detecting asymmetry in rotating structures a combined acutation and signal processing approach," 23rd International Modal Analysis Conference (IMAC XXIII), 2005. 43 APPENDIX A The simulated disc dynamics is computed according to: s , t r eic t ei r ( t ) n , sk t s , t 2 k , k 015 n (A1) 16 r The instantaneous phase of each component, representing either run-up or rundown of the rotating system, is computed by: r t r 1t 2t 2 , r 0 0 (A2) Table 1.
The direction of travel is commonly represented in terms of positive and negative frequencies, respectively [2, 8, 12, 32, 33]. 0 meter long. The shaft was mounted on two self-aligning ballbearings and it was driven by a 20Nm rated AC brushless motor capable of running up to 4500 RPM. A flexible disk was mounted on the other end of the shaft. A virtual cut-through is shown in the middle of the shaft through which an active magnetic bearing can be seen. In the present test, the magnetic bearing produced a small, band-limited random force to enrich the measurements and simulate the effect of turbulence in real jet-engines.
10th International Conference on Vibrations in Rotating Machinery: 11-13 September 2012, IMechE London, UK by Institution of Mechanical Engineers