پیوندهای مفید
آمار
| تعداد نشریات | 8 |
| تعداد شماره‌ها | 430 |
| تعداد مقالات | 5,597 |
| تعداد مشاهده مقاله | 7,096,037 |
| تعداد دریافت فایل اصل مقاله | 6,042,219 |
Effect of Stator Dynamics on the Chaotic Behavior of Rotor-Disk-Bearing System under Rub-Impact between Disk and Stator | ||
| AUT Journal of Mechanical Engineering | ||
| مقاله 11، دوره 4، شماره 1، خرداد 2020، صفحه 127-148 اصل مقاله (1.72 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajme.2019.14979.5754 | ||
| نویسندگان | ||
| Abbas Rahi* ؛ Ahmad Haghani؛ Pedram Safarpour | ||
| Faculty of Mechanical & Energy Engineering, Shahid Beheshti University | ||
| چکیده | ||
| In the present study, the effect of stator dynamics on the chaotic behavior of a rotor-diskbearing system with rub-impact between disk and stator is investigated. The governing equations of motion are derived using Jeffcott model and Newton’s second law and then are made dimensionless. In the beginning, the system is modeled regardless of stator dynamics, and then the stator dynamics is also considered in the modeling of the system. In both cases, the system behavior is studied by bifurcation diagrams, time series diagrams, phase plane diagrams, power spectrum diagrams, Poincaré maps, and maximum Lyapunov exponent, respectively. The obtained results show that the type of stator dynamics modeling has a significant effect on the prediction of the response of a disk-bearing system with rubimpact between disk and stator. In other words, the results show the system has a chaotic behavior without considering the dynamics of the stator in mathematical modeling, while in the case of considering the stator dynamics and using the suitable values for the stator stiffness, the motion behavior of the system can be changed from the chaotic to the regular and periodic motion. | ||
| کلیدواژه‌ها | ||
| Rotor-disk-bearing؛ Stator dynamics؛ Rub-impact؛ Chaotic behavior | ||
| مراجع | ||
|
[1] A. Muszynska, Rotordynamics, CRC press, 2005.
[2] H. Khanlo, M. Ghayour, S. Ziaei-Rad, Chaotic vibration analysis of rotating, flexible, continuous shaft-disk system with a rub-impact between the disk and the stator, Communications in Nonlinear Science and Numerical Simulation, 16(1) (2011) 566-582.
[3] H. Khanlo, M. Ghayour, S. Ziaei-Rad, The effects of lateral–torsional coupling on the nonlinear dynamic behavior of a rotating continuous flexible shaft–disk system with rub–impact, Communications in Nonlinear Science and Numerical Simulation, 18(6) (2013) 1524- 1538.
[4] Y.S. Choi, On the contact of partial rotor rub with experimental observations, KSME international journal, 15(12) (2001) 1630-1638.
[5] F. Chu, W. Lu, Stiffening effect of the rotor during the rotor-to-stator rub in a rotating machine, Journal of Sound and vibration, 308(3-5) (2007) 758-766.
[6] X. Shen, J. Jia, M. Zhao, Nonlinear analysis of a rubimpact rotor-bearing system with initial permanent rotor bow, Archive of Applied Mechanics, 78(3) (2008) 225- 240.
[7] L. Xiang, A. Hu, L. Hou, Y. Xiong, J. Xing, Nonlinear coupled dynamics of an asymmetric double-disc rotorbearing system under rub-impact and oil-film forces, Applied Mathematical Modelling, 40(7-8) (2016) 4505- 4523.
[8] F. Choy, J. Padovan, Non-linear transient analysis of rotor-casing rub events, Journal of Sound and Vibration, 113(3) (1987) 529-545.
[9] A.R. Bartha, Dry friction backward whirl of rotors, ETH Zurich, 2000.
[10] W.M. Zhang, G. Meng, Stability, bifurcation and chaos of a high-speed rub-impact rotor system in MEMS, Sensors and Actuators A: Physical, 127(1) (2006) 163- 178.
[11] S. Roques, M. Legrand, P. Cartraud, C. Stoisser, C. Pierre, Modeling of a rotor speed transient response with radial rubbing, Journal of Sound and Vibration, 329(5) (2010) 527-546.
[12] J. Yu, P. Goldman, D. Bently, A. Muzynska, Rotor/seal experimental and analytical study on full annular rub, Journal of Engineering for Gas Turbines and Power, 124(2) (2002) 340-350.
[13] E.E. Pavlovskaia, E. Karpenko, M. Wiercigroch, Nonlinear dynamic interactions of a Jeffcott rotor with preloaded snubber ring, Journal of Sound and Vibration, 276(1-2) (2004) 361-379.
[14] Z. Feng, X.Z. Zhang, Rubbing phenomena in rotor– stator contact, Chaos, Solitons & Fractals, 14(2) (2002) 257-267.
[15] L. Hall, D. Mba, Diagnosis of continuous rotor–stator rubbing in large scale turbine units using acoustic emissions, Ultrasonics, 41(9) (2004) 765-773.
[16] H. Ma, Q. Zhao, X. Zhao, Q. Han, B. Wen, Dynamic characteristics analysis of a rotor–stator system under different rubbing forms, Applied Mathematical Modelling, 39(8) (2015) 2392-2408.
[17] C.W. Chang-Jian, C.K. Chen, Non-linear dynamic analysis of rub-impact rotor supported by turbulent journal bearings with non-linear suspension, International Journal of Mechanical Sciences, 50(6) (2008) 1090-1113.
[18] J.D. Jeng, L. Hsu, C.-W. Hun, C.-Y. Chou, Identification for bifurcation and responses of rub-impacting rotor system, Procedia Engineering, 79 (2014) 369-377.
[19] A. Hu, L. Hou, L. Xiang, Dynamic simulation and experimental study of an asymmetric double-disk rotorbearing system with rub-impact and oil-film instability, Nonlinear Dynamics, 84(2) (2016) 641-659.
[20] L. Xiang, X. Gao, A. Hu, Nonlinear dynamics of an asymmetric rotor-bearing system with coupling faults of crack and rub-impact under oil-film forces, Nonlinear Dynamics, 86(2) (2016) 1057-1067.
[21] L. Chen, Z. Qin, F. Chu, Dynamic characteristics of rub-impact on rotor system with cylindrical shell, International Journal of Mechanical Sciences, 133 (2017) 51-64.
[22] E. Tofighi-Niaki, P. Asgharifard-Sharabiani, H. Ahmadian, Nonlinear dynamics of a flexible rotor on tilting pad journal bearings experiencing rub–impact, Nonlinear Dynamics, 94(4) (2018) 2937-2956.
[23] K. Prabith, I.P. Krishna, A Modified Model Reduction Technique for the Dynamic Analysis of Rotor-Stator Rub, in: International Conference on Rotor Dynamics, Springer, 2018, pp. 400-411.
[24] L. Hou, H. Chen, Y. Chen, K. Lu, Z. Liu, Bifurcation and stability analysis of a nonlinear rotor system subjected to constant excitation and rub-impact, Mechanical Systems and Signal Processing, 125 (2019) 65-78.
[25] R.V. Moreira, A. Paiva, The Influence of Friction in Rotor-Stator Contact Nonlinear Dynamics, in: International Conference on Rotor Dynamics, Springer, 2018, pp. 428-441.
[26] J. Hong, P. Yu, D. Zhang, Y. Ma, Nonlinear dynamic analysis using the complex nonlinear modes for a rotor system with an additional constraint due to rub-impact, Mechanical Systems and Signal Processing, 116 (2019) 443-461.
| ||
|
آمار تعداد مشاهده مقاله: 834 تعداد دریافت فایل اصل مقاله: 689 |
||