This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Whirl Analysis of an Overhung Disk Shaft System Mounted on Non-rigid Bearings
Technical Paper
2022-01-0607
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Eigenvalues of a simple rotating flexible disk-shaft system are obtained using different methods. The shaft is supported radially by non-rigid bearings, while the disk is situated at one end of the shaft. Eigenvalues from a finite element and a multi-body dynamic tool are compared against an established analytical formulation. The Campbell diagram based on natural frequencies obtained from the tools differ from the analytical values because of oversimplification in the analytical model. Later, detailed whirl analysis is performed using AVL Excite multi-body tool that includes understanding forward and reverse whirls in absolute and relative coordinate systems and their relationships. Responses to periodic force and base excitations at a constant rotational speed of the shaft are obtained and a modified Campbell diagram based on this is developed. Whirl of the center of the disk is plotted as an orbital or phase plot and its rotational direction noted. Finally, based on the above plots, forward and reverse whirl zones for the two excitation types are established.
Recommended Content
Authors
Citation
Chowdhury, S. and Joshi, Y., "Whirl Analysis of an Overhung Disk Shaft System Mounted on Non-rigid Bearings," SAE Technical Paper 2022-01-0607, 2022, https://doi.org/10.4271/2022-01-0607.Also In
References
- Kumar , A.S. and Sankar , T.S. A New Transfer Matrix Method for Response Analysis of Large Dynamic Systems Computers & Structures 23 4 1986 545 552
- Taiping , H. The Transfer Matrix Impedance Coupling Method for the Eigensolutions of Multi-Spool Rotor Systems ASME Journal of Vibration, Acoustics, Stress, and Reliability in Design 110 1988 468 472
- Srinath , L.S. and Das , Y.C. Vibrations of Beams Carrying Mass Transactions of the ASME, Journal of Applied Mechanics E 34 1967 784 785
- Eshleman , R.L. and Eubanks , R.A. On the Critical Speeds of a Continuous Shaft-Disk System ASME Journal of Engineering for Industry 1967 645 652
- Chivens , D.R. and Nelson , H.D. The Natural Frequencies and Critical Speeds of a Rotating, Flexible Shaft-Disk System ASME Journal of Engineering for Industry 1975 881 886
- Nataraj , C. On the Interaction of Torsion and Bending in Rotating Shafts ASME Journal of Applied Mechanics 1993 239 241
- Chiu , Y. and Yang , C.H. The Coupled Vibration in a Rotating Multi-Disk Rotor System with Grouped Blades Journal of Mechanical Science and Technology 28 5 2014 1653 1662
- Chowdhury , S. and Yedavalli , R.K. Vibration of High Speed Helical Geared Shaft Systems Mounted on Rigid Bearings International Journal of Mechanical Sciences 142 2018 176 190
- Chowdhury , S. and Yedavalli , R.K. Dynamics of Belt-Pulley-Shaft Systems Mechanism and Machine Theory 98 2016 199 215
- Chowdhury , S. and Yedavalli , R.K. Dynamics of Low Speed Geared Shaft Systems Mounted on Rigid Bearings Mechanism and Machine Theory 112 2017 123 144
- Taplak , H. and Parlak , M. Evaluation of Gas Turbine Rotor Dynamic Analysis Using the Finite Element Method Measurement 45 5 2012 1089 1097
- Szolc , T. On the Discrete-Continuous Modeling of Rotor Systems for the Analysis of Coupled Lateral Torsional Vibrations International Journal of Rotating Machinery 6 2 2000 135 149
- Hili , M.A. , Fakhfakh , T. , and Haddar , M. Vibration Analysis of a Rotating Flexible Shaft-Disk System Journal of Engineering Mathematics 57 4 2007 351 363
- Prashant , V. and Sankha , B. Finite Element Modeling of Rotor using ANSYS International Journal for Research in Applied Science & Engineering Technology (IJRASET) 4 2 2016 414 421
- Klarin , B. , Resch , T. , Grozdanovic , I. , and Pevec , D. Root Cause Analysis and Structural Optimization of E-Drive Transmission SAE Technical Paper 2020-01-1578 2020 2020 https://doi.org/10.4271/2020-01-1578
- Chowdhury , S. , Vasu , A. , Chung , J. , and Mehta , Y. Lead Mismatch Calculation of a Helical Gear System Mounted on Balance Shafts SAE Technical Paper 2021-01-0673 2021 2021 https://doi.org/10.4271/2021-01-0673
- Hartog , D. Mechanical Vibrations Jacob Pieter., Courier Corporation 1985
- TM
- Dadam , S. , Ravi , V. , Jentz , R. , and Kumar , V. Assessment of Exhaust Actuator Control at Low Ambient Temperature Conditions SAE Technical Paper 2021-01-0681 2021 2021 https://doi.org/10.4271/2021-01-0681
- Dadam , S. , Van Nieuwstadt , M. , Lehmen , A. , and Ravi , V. A Unique Application of Gasoline Particulate Filter Pressure Sensing Diagnostics SAE Int. J. Passeng. Cars - Mech. Syst. 14 06-14-02-0007 2021 105 116
- Dadam , S.R. , Ali , I. , Zhu , D. , and Kumar , V. Effects of Differential Pressure Measurement Characteristics on High Pressure-EGR Estimation Error in SI-Engines International Journal of Engine Research 2021 14680874211055580