Analytical and Numerical Investigation to the Effect of Single Transverse Crack on the Dynamic Behavior of Rotor-Bearings System

  • Authors

    • Abed Salam Ahmed
    • Thijel Jassim Farij
    • Bahrami Mohammad Reza
    https://doi.org/10.14419/ijet.v7i3.20.28414
  • rotor dynamics, cracked rotor, single crack, transverse crack, critical speed and dynamic behavior of the rotor-bearings system

  • This paper focused about the effect of single crack on the response and critical speed for rotor shaft which has a disc lies not at mid span supported by two journal bearings. First, found the dynamic behavior and parameters of journal bearings (stiffness and damping) and their Sommerfeld number with varies rotating speeds. The speed changing on eccentricity of journal with shaft center and on Sommerfeld number. Second, investigated the effect of changing of crack’s depth on the maximum response and critical speed for single cracked rotor. The comparison has been done between analytical and numerical results for uncrack and single cracked rotor by showing the discrepancy between them by using MATLAB & ANSYS for analytical and numerical methods respectively.

     

     


     

  • References

    1. [1] Abdul Ghaffar Abdul Rahman, Ong Zhi Chao and Zubaidah Ismail, 2010, Effectiveness of Impact-Synchronous Time Averaging in Determination of Dynamic Characteristics of a Rotor Dynamic System, Technical Paper, Mechanical Engineering Department, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.

      [2] Shakeel PM, Baskar S, Dhulipala VS, Jaber MM., “Cloud based framework for diagnosis of diabetes mellitus using K-means clusteringâ€, Health information science and systems, 2018 Dec 1;6(1):16.https://doi.org/10.1007/s13755-018-0054-0

      [3] Chen Y. S , Cheng Y. D , Liao J. J and Chiou C. C, 2008, Development of A Finite Element Solution Module for the Analysis of the Dynamic Behavior and Balancing Effects of an Induction Motor System, Technical Paper, Department of Mechanical Engineering, Yuan-Ze University, Chungli 320 Taiwan, ROC.

      [4] Manogaran G, Shakeel PM, Hassanein AS, Priyan MK, Gokulnath C. Machine-Learning Approach Based Gamma Distribution for Brain Abnormalities Detection and Data Sample Imbalance Analysis. IEEE Access. 2018 Nov 9.DOI 10.1109/ACCESS.2018.2878276

      [5] Ignacio Ramirez Vargas, Luis Manuel Palacios Pineda, and Humberto Corro Hernandez, 2013, Vibrational Response of a Rotor Supported in Hydrodynamics Short Bearings, Memories Del Xix International Congress of Her Annual Somim, 25 Al 27 De September, 2013 PACHUCA, HIDALGO, MEXICO.

      [6] J.S.Rao, 2011, History of Rotating Machinery Dynamics, Springer Science + Business Media B.V., pp188-196 & pp 242-248.

      [7] Kris Matthys, Marco Perucchi and Koenraad De Bauw, Rotor Dynamic modeling as powerful support tool for vibration Analysis on large Turbo machinery.

      [8] Maurice L, Adams, 2001, Rotating Machinery Vibration, From analysis to Troubleshooting, Marcel Dekker, Inc.

      [9] MuhammedShafi. P,Selvakumar.S*, Mohamed Shakeel.P, “An Efficient Optimal Fuzzy C Means (OFCM) Algorithm with Particle Swarm Optimization (PSO) To Analyze and Predict Crime Dataâ€, Journal of Advanced Research in Dynamic and Control Systems, Issue: 06,2018, Pages: 699-707

      [10] Nagaraju Tena and Srinivas Kadivendi, 2014, Rotor Dynamic Analysis of Steam Turbine Rotor Using ANSYS. IJMERR, ISSN2278-0149, Vol.3, No1.

      [11] Xu Yang, Zhao Lei and Yu Suyuan, 2004, Dynamics Analysis of Very Flexible Rotor ,Technical Paper, Institute of Nuclear Energy Technology, Tsinghua University, Beijing 100084, P.R.China.

      [12] Yukio Ishida and Toshio Yamamoto, 2012, Linear and Nonlinear Rotor Dynamics,(A Modern Treatment with Applications, 2nd Enlarged and Improved Edition, Wiley-VCH Verlag, Germany, pp307-320.

      [13] C. Won Lee, "Vibration Analysis of Rotors"1993 Springer Science + Business Media Dordrecht, Originally published by Kluwer Academic,pp99-120.

      [14] Shakeel PM, Manogaran G., “Prostate cancer classification from prostate biomedical data using ant rough set algorithm with radial trained extreme learning neural networkâ€, Health and Technology, 2018:1-9.https://doi.org/10.1007/s12553-018-0279-6

      [15] E.T. John Penny and I. Michael Friswell, 2002, The Dynamics of Cracked Rotors.

      [16] Preeth, S.K.S.L., Dhanalakshmi, R., Kumar, R.,Shakeel PM.An adaptive fuzzy rule based energy efficient clustering and immune-inspired routing protocol for WSN-assisted IoT system.Journal of Ambient Intelligence and Humanized Computing.2018:1–13. https://doi.org/10.1007/s12652-018-1154-z

      [17] Michael, I. Friswell., John E. T. Penny, and Arthur W. Lees, 2012 , Dynamics of Rotating Machines, Cambridge University Press, 32 Avenue of the Americas New York NY 10013-2473 USA, First Published 2010, Reprinted 2012, pp177-183.

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  • How to Cite

    Salam Ahmed, A., Jassim Farij, T., & Mohammad Reza, B. (2018). Analytical and Numerical Investigation to the Effect of Single Transverse Crack on the Dynamic Behavior of Rotor-Bearings System. International Journal of Engineering & Technology, 7(3.20), 900-905. https://doi.org/10.14419/ijet.v7i3.20.28414