Ghoniem, M., Gerguis, A., Makram, M., Nemnem, A., Badawy, A. (2017). Experimental and Theoretical Determination of Rotor Critical Speeds. test, 2(Second International Undergraduate Research Conference, IUGRC), 92-92. doi: 10.21608/iugrc.2017.90927
Mohamed Khames Ghoniem; Ayman Atta Gerguis; Michael Makram; Ahmed F. Nemnem; Ahmed Badawy. "Experimental and Theoretical Determination of Rotor Critical Speeds". test, 2, Second International Undergraduate Research Conference, IUGRC, 2017, 92-92. doi: 10.21608/iugrc.2017.90927
Ghoniem, M., Gerguis, A., Makram, M., Nemnem, A., Badawy, A. (2017). 'Experimental and Theoretical Determination of Rotor Critical Speeds', test, 2(Second International Undergraduate Research Conference, IUGRC), pp. 92-92. doi: 10.21608/iugrc.2017.90927
Ghoniem, M., Gerguis, A., Makram, M., Nemnem, A., Badawy, A. Experimental and Theoretical Determination of Rotor Critical Speeds. test, 2017; 2(Second International Undergraduate Research Conference, IUGRC): 92-92. doi: 10.21608/iugrc.2017.90927

Experimental and Theoretical Determination of Rotor Critical Speeds

The International Undergraduate Research Conference
Article 63, Volume 2, Second International Undergraduate Research Conference, IUGRC, 2017, Pages 92-92    PDF (511.15 K)
Document Type: Original Article
DOI: 10.21608/iugrc.2017.90927
Authors
Mohamed Khames Ghoniem1; Ayman Atta Gerguis1; Michael Makram2; Ahmed F. Nemnem3; Ahmed Badawy4
1MTC, Egypt.
2Teacher assistant, MTC, Egypt.
3Assistant professor, MTC, Egypt.
4Professor, MTC, Egypt.
Abstract
The rotor critical speeds are the speeds accompanied by a great dynamic load, and maximum vibration. The critical speeds of rotation coincide with the natural frequencies of transverse vibration of the non-rotating shaft disc system. These speeds should be determined carefully. In this paper, the critical speeds of a shaft-discs system are calculated using several methods. Firstly, Raleigh’s method, and transfer matrix method are used to calculate the first and the second critical speeds using MATLAB software. Secondly, the critical speeds are calculated by finite element method using ANSYS package. Finally, an experimental investigation is done to determine the values of critical speeds. The experimental results are presented in comparison with the calculated values.
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