- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Modal Analysis of Quill Shaft in Turbo-generator Unit Based on SolidWorks | ||
| Al-Rafidain Engineering Journal (AREJ) | ||
| Article 15, Volume 24, Issue 1, 2019, Pages 55-66 PDF (1009.46 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/rengj.2019.163197 | ||
| Author | ||
| Dr. Fares. Q. Yahya* | ||
| Department of Mechatronics Engineering, College of Engineering, University of Mosul, Mosul, Iraq | ||
| Abstract | ||
| The main goal of this work is to carry out a numerical modal analysis of a Quill shaft of turbo-generator unitaffiliate to Mosul gas turbine station, using a trail version of popular finite element analysis software SolidWorks. The main function of Quill shaft is to protect the turbo-generator unit against overloads due to electrical network faults. The high flexibility of this shaft makes it capable of absorbing high displacements of resonance phenomena. This analysis is essentially needed to study the effect of transient loads applied to Quill shaft of turbo-generator unit under severe loading conditions such as electric network disturbances. The first five values of critical frequencies and mode shapes of axial, bending, and torsional vibrations were studied and analyzed. Each mode has been isolated separately by applying a special type of boundary conditions (restraints) available in program. The three types of natural frequencies have been found and reported. It was observed that the fundamental values of each three types of natural frequencies are relatively high and out of the range of Quill shaft operating speed. Finally, it has been concluded from all analyses that Quill shaft under consideration is safe from the stand point of modal analysis. The results show that the Quill shaft is not running at any of each three types critical speeds. Therefore, the resonance phenomenon for all three types of vibrations can not be happened no matter how high the amount of transient load applied. | ||
| Keywords | ||
| SolidWorks; Finite element method; Turbo-generator unit; Natural frequency; modal analysis; Quill shaft; Simulation | ||
| References | ||
|
[1] S. M. Ali, Z. Y. Mohammad, and F. Q.Yahya, Estimation of Model Parameters forTorsional Vibration Analysis of a Turbo-Generator Unit with Reference to MosulGas-Turbine Station, Al-RafidainEngineering Journal, Vo.23, No.2, 2015,pp. 91-116.
[2] Qing He and Dongmei Du, Modeling and Calculation Analysis of Torsional Vibration for Turbine Generator Shafts, Journal of Information and Computational Science, Vol. 7, October, 2010, pp. 2174-2182.
[3] Yichang Liu, chunlinTian, Tao Liu, and Fanwu Kong, Modal Analysis of Worm Gear Based on ANSYS Workbench, MATEC Web of Conferences 34, 02014, 2015.
[4] LiCheng and Hongguang Wang, Finite Element Modal Analysis of the FPD Glass Substrates Handling Robot, international Conference on Mechatronics and Automation, Proceedings of 2012 IEEE, August 5-8, Chengdu, china,2012.
[5] S. Graham Kelly, Mechanical Vibrations: Theory and Application, SI, Global Engineering Christoper M. Shortt, 2012.
[6] O.C. Zienkiewicz,The Finite Element Method,4thed., McGraw-Hill, London, 1987.
[7] S. S. Rao, The Finite Element Method in Engineering (3rd ed.), Butterworth- Heinemann,Boston, 1999.
[8] S. S. Rao, Mechanical Vibrations, 5th ed., Prentice Hall, 2011
[9] Ravikant, GopalKrishan, and MukeshDidwania, Modal Analysis of Drive Shaft Using FEA, International Journal of Engineering and Management Research, Vol.3, No.1, February, 2013. | ||
|
Statistics Article View: 552 PDF Download: 1,173 |
||