Abstract
Precise modelling of dynamics of complex technological systems is complicated problem requiring significant human and computational resources. Therefore, aiming to create model of rational size and complexity, some adjustments of models should be done applying experimentally obtained parameters of rotary systems and their elements. This paper presents results of modelling of vibrations of rigid rotor caused by the degradation of hydrodynamic bearings. Model is composed applying equations of nonlinear hydrodynamic forces and measured parameters of a real rotary machine. DOI: http://dx.doi.org/10.5755/j01.mech.18.4.2330
Highlights
Many aspects of rotary systems behaviour should be considered in their exploitation
Measurements of vibrations are widely used for condition monitoring and faults detection of rotary systems [1,2,3,4,5,6]
In most cases vibration monitoring is limited to measurements of vibrations in several points of a machine
Summary
Many aspects of rotary systems behaviour should be considered in their exploitation. Technological machines and systems are affected by various internal and external exciters. It is vital to use proper methods of condition monitoring aiming to control and predict processes running in those machines. Measurements of vibrations are widely used for condition monitoring and faults detection of rotary systems [1,2,3,4,5,6]. It may be complicated to rely only on the experimental data especially for prediction of rotary systems behaviour and changes of reliability caused by gradual degradation of their elements. Numerical modelling of rotary systems dynamics is useful not just for design, and for prediction of their parameters (e.g. changes of dynamics caused by long term exploitation) during exploitation [1, 2, 5, 7, 8]
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