Carella, Alfredo R. (2008) Análisis de vibraciones y diseño de un sistema de balanceo para rotores de alta velocidad. / Vibration analysis and design of a balancing system for high-speed rotors. Integration Project in Mechanical Engineering, Universidad Nacional de Cuyo, Instituto Balseiro.
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| PDF (Tesis) Spanish 4Mb |
Abstract in Spanish
Se diseñó, construyó y caracterizó un sistema de balanceo en uno y dos planos para rotores de alta velocidad de giro adaptable a distintos tamaños de eje. Se probaron para el mismo diferentes tipos de transductores de vibraciones y se diseñaron filtros analógicos de acondicionamiento de señal. Se desarrolló un programa de adquisición y análisis espectral empleando FFT y modulación por ventanas con interfaz gráfica amigable (GUI). Se montó y caracterizó el sistema diseñado, obteniéndose buena repetitividad y alta sensibilidad en las mediciones, incluso muy por debajo de la frecuencia de diseño. Se balanceó un rotor de 930 gramos a 2400rpm, logrando reducir el desbalance desde un valor inicial de 107,69 g ·mm hasta un valor final de 0,72 g · mm.
Abstract in English
A balancing system for high-speed rotating shafts, was designed, built, calibrated and tested. The balancing system can be used for many different shafts sizes, and for calibration with the one-plane and two-plane methods. Several types of vibration transducers were tested. Also analog filters for signal conditioning were designed, characterized and tested. User-friendly software was developed for data acquisition and frequency spectra analysis. Fast Fourier Transform was used to transform raw data to frequency spectra which was presented using a graphic user interface. The balancing system was assembled and tested, and high sensitivity and repeatability were verified. Good results were obtained for frequencies below the design range. As a test sample, a rotor weighing 930 grams -unbalanced by 107,69 g · mm- was balanced at 2400 rpm, and the final unbalancing was reduced to 0.72 g · mm.
| Item Type: | Thesis (Integration Project in Mechanical Engineering) |
|---|---|
| Keywords: | Mechanical vibrations; Vibraciones mecánicas; Resonance; Resonancia; Vibration; Vibraciones, Spectra analysis; Análisis espectral; High-speed; Alta velocidad; Balanceo; Balancing |
| References: | Ashby, M. F. (1992). Materials Selection in Mechanical Design. Pergamon Press. Cited on page 40. Crandall, S. H. and N. C. Dahl (1966). Introduction to Solid Mechanics. McGraw- Hill. Cited on page 43. Ifeachor, E. C. and B. W. Jervis (1993). Digital Signal Processing: A Practical Approach. Addison-Wesley. Cited on page 15. Lyons, R. G. (1997). Understanding Digital Signal Processing. Addison-Wesley. Cited on page 22. Wowk, V. (1995). Machinery Vibration: Balancing. McGraw-Hill. Cited on pages 3, 13, 27. |
| Subjects: | Mechanical engineering Mechanical engineering > Machine elements |
| Divisions: | Ciclo combustible nuclear > Grupo diseños avanzados y evaluación económica |
| ID Code: | 411 |
| Deposited By: | Marisa G. Velazco Aldao |
| Deposited On: | 05 Dec 2013 15:59 |
| Last Modified: | 05 Dec 2013 16:00 |
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