Vibration Responses of a Coaxial Dual-Rotor System with Supporting Misalignment
Source abstract
Abstract
In order to improve the thrust-weight ratio, modern aeroengines generally adopt a coaxial dual-rotor system. Factors such as manufacturing errors, assembly errors, bearing wear, and structural deformation can cause misalignment failures in a dual-rotor system. Supporting misalignment is one of the common types of misalignments in a dual-rotor system. To analyze the vibration characteristics of misalignment faults, in this study, we aim to build a finite element model of a dual-rotor system with supporting misalignment. The bearing loads caused by supporting misalignment are calculated using the three-bending moment equation method. Bearing loads are introduced into the dynamic model of the dual-rotor system. The influence of supporting misalignment at different bearings on the dynamic characteristics of the rotor system is investigated based on the supporting misalignment model. Studies have shown that supporting misalignment at different bearings has similar effects on the dynamic characteristics of the dual-rotor system. The proposed supporting misalignment model is more adaptable than the coupling misalignment model. It indicates that the damping of a rolling bearing should be considered in the dynamic analysis of a dual-rotor system although the value of the damping is not large. An experimental analysis is carried out. The simulation results are in good agreement with the experimental results.
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Research context
OpenAlex topics: Tribology and Lubrication Engineering · Magnetic Bearings and Levitation Dynamics · Mechanical Engineering and Vibrations Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, Liuzhou Institute of Technology, Liuzhou 454006, China
School of Mechanical & Electrical Engineering, Foshan University, Foshan 528000, China
Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan 411201, China
Funding
National Natural Science Foundation of China
References (39)
Show source-provided references
1. Wen, B.G., Wang, M.L., Han, Q.K., and Yu, C.X. (November, January 30). Effect of Ball Bearing Misalignment on Dynamic Characteristics of Rotor System. Proceedings of the Fourth Chinese International Turbomachinery Conference, Nanchang, China.
2. Dynamic Response of a Rotating Assembly under the Coupled Effects of Misalignment and Imbalance
3. Fan, W., Lu, H., Zhang, Y., and Su, X. (2020). Dynamic Characteristics of Gear Coupling and Rotor System in Transmission Process Considering Misalignment and Tooth Contact Analysis. Processes, 8.10.3390/pr8111336 ↗
4. Failure Analysis of Fractured Motor Bolts in High-speed Train Due to Cardan Shaft Misalignment10.1016/j.engfailanal.2021.105246 ↗
5. Comparison Study of Misalignment Effect Along Two Perpendicular Directions on the Stability of Rigid Rotor-aerostatic Journal Bearing System10.1177/1350650120922110 ↗
6. Effect of Rotor Misalignment on Stability of Journal Bearings with Finite Width
7. Dynamic Characteristics of a Misaligned Rigid Rotor System with Flexible Supports10.1155/2021/8876190 ↗
8. Ye, Z., Chen, Z., Lu, H., Wang, S., Li, z., Yang, M., and Wu, W. (2021, January 12–14). Analysis of Parallel Misalignment of Gear Coupling in Rotor System Using EEMD-median Filter Method. Proceedings of the 2021 IEEE 5th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC), Chongqing, China.10.1109/IAEAC50856.2021.9390976 ↗
9. Prainetr, S., Tunyasrirut, S., and Wangnipparnto, S. (2021). Testing and Analysis Fault of Induction Motor for Case Study Misalignment Installation Using Current Signal with Energy Coefficient. World Electr. Veh. J., 12.10.3390/wevj12010037 ↗
10. Effect of Misalignment at 2nd Vane Endwall on Heat Transfer with Purge Flow10.1016/j.ijheatmasstransfer.2021.121034 ↗
11. Vibration Responses of Rotor Systems in Diesel Multiple Units under Dynamic Spatial Misalignments and Base Motions10.1016/j.jsv.2020.115817 ↗
12. Vibration Responses of Rotating Elastic Coupling with Dynamic Spatial Misalignment10.1016/j.mechmachtheory.2020.103916 ↗
13. Off-line Detection of Static Eccentricity of PMSM Robust to Machine Operating Temperature and Rotor Position Misalignment Using Incremental Inductance Approach. IEEE Trans10.1109/TTE.2020.3006016 ↗
14. Finite Element Modelling, Analysis and Identification Using Novel Trial Misalignment Approach in an Unbalanced and Misaligned Flexible Rotor System Levitated By Active Magnetic Bearings10.1016/j.ymssp.2020.107454 ↗
15. Development of a Novel Approach for Quantitative Estimation of Rotor Unbalance and Misalignment in a Rotor System Levitated By Active Magnetic Bearings
16. Xu, X., Feng, J., Wang, H., Zhang, N., and Wang, X. (2020). Dynamics Analysis of Misalignment and Stator Short-circuit Coupling Fault in Electric Vehicle Range Extender. Processes, 8.10.3390/pr8091037 ↗
17. Numerical analysis of the dynamic behavior of a rotor-bearing-brush seal system with bristle interference10.1007/s12206-019-0733-z ↗
18. Magnetic Equivalent Modeling of Stator Currents for Localized Fault Detection of Planetary Gearboxes Coupled to Electric Motors10.1109/TIE.2020.2973894 ↗
19. Dynamic Response Analysis for the Aero-engine Dual-rotor-bearing System with Flexible Coupling Misalignment Faults10.21595/jve.2017.18553 ↗
20. The Applications of Pod Method in Dual Rotor-bearing Systems with Coupling Misalignment10.1016/j.ymssp.2020.107236 ↗
21. Li, J., Hong, J., Ma, Y.H., and Zhang, D. (2012, January 9–15). Modelling of Misaligned Rotor Systems in Aero-engines. Proceedings of the ASME 2012 International Mechanical Engineering Congress & Exposition, Houston, TX, USA.10.1115/IMECE2012-85706 ↗
22. Wang, G.H., Ma, Y.H., Li, T.R., Li, J., and Hong, J. (2013, January 15–21). Modelling of Misaligned Rotor System in Aero-engines and Interval Method Investigation. Proceedings of the ASME 2013 International Mechanical Engineering Congress and Exposition, San Diego, CA, USA.10.1115/IMECE2013-62790 ↗
23. Wang, C., Ma, Y.H., Zhang, D.Y., and Hong, J. (2015, January 15–19). Interval Analysis on Aero-engine Rotor System with Misalignment. Proceedings of the ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, Montreal, QC, Canada.10.1115/GT2015-42729 ↗
24. Non-linear Vibration of an Angular-misaligned Rotor System with Uncertain Parameters10.1177/1077546314525432 ↗
25. Research on Dynamic Model of Rotors with Bearing Misalignment10.4028/www.scientific.net/AMM.539.3 ↗
26. Spectrum Analysis of a Coaxial Dual-rotor System with Coupling Misalignment
27. Gibbons, C.B. (1976, January 12–13). Coupling Misalignment Forces. Proceedings of the 5th Turbomachinery Symposium, Texas A & M University, College Station, TX, USA,.
28. Effects of Coupling Misalignment on Vibrations of Rotating Machinery10.1006/jsvi.1995.0407 ↗
29. Dual-rotor Misalignment Fault Quantitative Identification Based on DBN and Improved DS Evidence Theory10.1051/meca/2021022 ↗
30. Nonlinear Vibrations of a Dual-rotor-bearing-coupling Misalignment System with Blade-casing Rubbing10.1016/j.jsv.2021.115948 ↗
31. Xie, W., Liu, C., Wang, N., and Jiang, D. (2020). Numerical and Experimental Analysis of Rubbing–misalignment Mixed Fault in a Dual-rotor System. Proc. IME C J. Mech. Eng. Sci., 2147483647.
32. Shafting Alignment Computing Method of New Multibearing Rotor System under Specific Installation Requirement
33. Bearing Load Distribution Studies in a Multi Bearing Rotor System and a Remote Computing Method Based on the Internet10.1007/BF02990866 ↗
34. Influence of Misalignment of Support Journal Bearings on Stability of a Multi-rotor System10.1016/0301-679X(80)90084-5 ↗
35. A Rig for Testing Lateral Misalignment Effects in a Flexible Rotor Supported on Three Or More Hydrodynamic Journal Bearings10.1016/S0301-679X(00)00027-X ↗
36. Friswell, M.I., Penny, J.E.T., Garvey, S.D., and Lees, A.W. (2010). Dynamics of Rotating Machines, Cambridge University Press.10.1017/CBO9780511780509 ↗
37. Oil-film Instability Simulation in an Overhung Rotor System with Flexible Coupling Misalignment10.1007/s00419-015-0998-3 ↗
38. Theoretical and Experimental Study on the Dynamic Response of Multi-disk Rotor System with Flexible Coupling Misalignment10.1177/0954406211435582 ↗
39. Vibration Analysis of a Misaligned Rotor-coupling-bearing System Passing Through the Critical Speed10.1243/0954406011524784 ↗