دوازدهمین کنفرانس بین‌المللی ارتعاشات در ماشین‌آلات دوار: مجموعه مقالات دوازدهمین کنفرانس مجازی ارتعاشات در ماشین‌آلات دوار (VIRM)، ۲۳-۲۴ مهر ۱۳۹۹ ۲۰۲۰
12th International Conference on Vibrations in Rotating Machinery: Proceedings of the 12th Virtual Conference on Vibrations in Rotating Machinery (VIRM), 14-15 October 2020 2020

1. Cover

2. Half Title

3. Title Page

4. Copyright Page

5. Table of Contents

6. Organising Committee

7. Identification of misaligned additive forces and moments of coupling in turbo-generator system integrated with an active magnetic bearing

8. On the analysis of a rotor system subjected to rub using a continuous model

9. Optimization of rotating machinery by BESO method

10. Influence of thrust bearings in lateral vibrations of turbochargers under axial harmonic excitation

11. Cylindrical roller bearing under elastohydrodynamic lubrication with localized defects modeling

12. Analytical study of rotordynamic behaviour and rolling element bearing transient response in a high-speed race transmission

13. Nonlinear analysis of hydrodynamic forces for multi-lobe bearings

14. Some further reflections on misalignment

15. Attenuating influence of time-delay on stability of rotors supported on active magnetic bearings

16. Calculation procedure to derive the threshold of vibration stability of soft mounted induction motors with elastic rotors and sleeve bearings fixed on active motor foot mounts for arbitrary controller structures

17. Experimental investigation on the static and dynamic characteristics of partially textured journal bearings

18. Rotating machines featuring new rotor topology and internal actuation for vibration mitigation

19. Effects of unbalance and AMB misalignment in a rigid rotor with an offset disc levitated by active magnetic bearings: A numerical investigation

20. Modal parameters evaluation of a rolling bearing rotor using operational modal analysis

21. Rotor-angular contact ball bearing system study using EHD lubrication and comparison with experimental tests

22. Effect of journal bearing preload caused by bearing-housing interference fit on nonlinear vibration of a flexible rotor supported by a journal bearing

23. Validation of the stochastic response of a rotor with uncertainties in the AMBs

24. Active chatter suppression in robotic milling using H∞ control

25. Fast estimation of classical flutter stability of turbine blade by reduced CFD modelling

26. Suppression and control of torsional vibrations of the turbo-generator shaft-lines using rotary magneto-rheological dampers

27. Coupling between axial, lateral and torsional vibration modes of a flexible shaft with flexible staggered blades

28. Integration of parameter sensitivity to structural optimization of helicopter rotors for minimum vibration

29. A parametric study into the effect of variability in clearance shape and bump foil stiffness distribution in foil-air bearings

30. Uncertainties in the calibration process of blade tip timing data against finite element model predictions

31. Parametric coupled instabilities of an on-board rotor subject to yaw and pitch with arbitrary frequencies

32. On the foundation dynamics and the active control of flexible rotors via active magnetic bearings

33. Vibration behaviour of a 11 kW two-pole induction motor mounted on elastic steel frame foundation with actuator system

34. Hybrid crankshaft control: Reduction of torsional vibrations and rotational irregularities under non-stationary operation

35. Improved reduction methodology for rotor-dynamic systems using Modified SEREP

36. Effect of L/D ratio and clearance of 3-lobe taper land bearing on stability of flexible rotor system

37. Data combination for a consolidated diagnosis of rotor and bearing faults

38. Asynchronous rotor excitation system (ARES) – A new rotor dynamic test facility at Imperial College London

39. Experimental investigation of non-linear stiffness behaviour of a rolling-element bearing

40. An optimal frequency band selection for bearing fault diagnosis based on squared envelope analysis

41. Improving the thrust bearing performance of turbocharger rotors using optimization methods and virtual prototypes

42. Characteristics of a high speed thin film fluid lubricated bearing

43. Simulation model to investigate effect of support stiffness on dynamic behaviour of a large rotor

44. Identification of frame dynamics of vertically oriented high-speed steam generator using model update procedure for reduced-order model

45. Comparison of different time integration schemes and application to a rotor system with magnetic bearings in MATLAB

46. Vibration monitoring of a large rotor utilizing internet of things based on-shaft MEMS accelerometer with inverse encoder

47. Mechanical design of rotor-bearing system in a high-speed 20 kW range extender for battery electric vehicles

48. Computational rotordynamics considering shrink fits

49. Analysis of the cavitation characteristics of elastic ring squeeze film damper

50. Experimental research on vibration reduction of turbine blades with underplatform dampers under rotating state

51. Rotor dynamics analysis of different bearing system configurations for a 30 kW high-speed turbocompressor

52. Digital twin of induction motors for torsional vibration analysis of electrical drive trains

53. A reduced semi-analytical gas foil bearing model for transient run-up simulations

54. Stable turbocharger bearings

55. AMrotor - A MATLAB® toolbox for the simulation of rotating machinery

56. A review of important nonlinear phenomena in rotor vibration

57. An experimental assessment of torsional and package vibration in an industrial engine-compressor system

58. Author Index