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Hariharan, V.
- Vibration Analysis of Misaligned Shaft-ball Bearing System
Abstract Views :576 |
PDF Views:346
Authors
Affiliations
1 Dept. of Mech. Engg., Kongu Engg. College, Perundurai, Erode- 638052, IN
2 Knowledge Institute of Technology ,Salem, 637504, IN
1 Dept. of Mech. Engg., Kongu Engg. College, Perundurai, Erode- 638052, IN
2 Knowledge Institute of Technology ,Salem, 637504, IN
Source
Indian Journal of Science and Technology, Vol 2, No 9 (2009), Pagination: 45-50Abstract
Experimental studies were performed on a rotor dynamic test apparatus to predict the vibration spectrum for shaft misalignment. A self-designed simplified 3 pin type flexible coupling was used in the experiments. The rotor shaft accelerations were measured using dual channel vibration analyzer (ADASH) under the misalignment condition. The experimental and numerical (ANSYS) frequency spectra were obtained. The experimental predictions are in agreement with the ANSYS results. Both the measured and ANSYS results spectra shows that misalignment can be characterized primarily by 2X (two times) shaft running speed. However, misalignment 2X is not close enough to one of the system natural frequencies to excite the system appreciably. Therefore, there are cases where the misalignment response is hidden and does not show up in the vibration spectrum. On the other hand, if 2x shaft running speed is at or close to one of the system natural frequencies, the misalignment effect can be amplified and the speed is pronounced in the frequency spectrum.Keywords
Misalignment, Vibration Analysis, Pin Type Flexible Coupling, Ball BearingFull Text
References
- Arumugam P, Swarnamani S and Prabhu BS (1995) Effects of coupling misalignment on the vibration characteristics of a two stage turbine rotor. ASME Design Engg. Tech. Conf. 84, 1049-1054.
- Dewell DL and Mitchell LD (1984) Detection of a misaligned disk coupling using spectrum analysis. ASME Trans. J. Vibration, Acoustics, Stress & Reliability Design. 106, 9-16.
- Ganeriwala S, Patel S and Hartung H (1999) The truth behind misalignment vibration spectra of rotating machinery. Proc. Intl. Modal Analysis Conf. pp: 2078-2205.
- Gibbons CB (1976) Coupling misalignment forces. In: Proc. of the 5th Turbo Machinery Symposium, Gas Turbine Laboratories, Texas A&M Univ. pp: 111-116.
- Goodman MJ (1989) Dynamics of rotor – bearing systems. London, Unwin Hyman Ltd.
- Piotrowski J (2006) Shaft Alignment Handbook. Third Ed. Marcel Dekker, Inc. New York.
- Sekhar AS and Prabhu BS (1995) Effects of coupling misalignment on Vibrations of rotating machinery. J. Sound Vibration. 185 (4), 655-671.
- Simon G (1992) Prediction of vibration behavior of large turbo machinery on elastic foundation due to unbalance and coupling misalignment. Proc. of the Institution of Mechanical Engineers. J. Mech. Engr . 206, 29-39.
- Vance JM (1988) Rotor dynamics of Turbomachinery. New York, John Wiley & Sons.
- Xu M and Marangoni RD (1994a) Vibration analysis of a motor flexible coupling rotor system subject to misalignment and unbalance, part I: theoretical model and analyses. J. Sound Vibration. 176(5), 663-679.
- Xu M and Marangoni RD (1994b) Vibration analysis of a motor flexible coupling rotor system subject to misalignment and unbalance, part II: Experimental validation. J. Sound Vibration. 176(5), 681-691.
- LMSDS: Learning Management System for Deaf Students in Collaborative Learning Environment
Abstract Views :137 |
PDF Views:0
Authors
Affiliations
1 Department of Information Technology, Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Avadi, Chennai - 600062, Tamilnadu, IN
1 Department of Information Technology, Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Avadi, Chennai - 600062, Tamilnadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 16 (2016), Pagination:Abstract
Objectives: To develop the system that maps the natural speech to the lip shape animation. Methods/Analysis: Now a day's speech technology plays a vital role in e-learning especially to design in respond to human voice. This technology mainly used for voice disabled, hearing-disabled and blind and so on. Findings: The sign Language being in use among Deaf and Dumb People. This study proposed the new approach called (LMSDS) Learning Management System for Deaf Students. This system used in speech processing and real-time implementation of chat application. Visual animated face will helpful for deaf students to learn the lip movement language more effectively. Applications: This is used in education for disability, deaf students to learn Lip movement language.Keywords
: Collaborative Learning, LMSDS, Lip Movement Language, Sign Language, Speech ProcessingFull Text