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ANALYSIS OF THE ROTOR-STATOR CONTACT DYNAMICS
Sanjin Braut
; Faculty of Engineering, University of Rijeka, Rijeka, Croatia
Abstract
In this thesis, numerical approach for solving the contact phenomena between rotor and stator is shown. As well as simple contact models, complex FEM models are analyzed too. For simple models Runge-Kutta method were used but for complex model special application, called RotorDyn, was programmed. In this thesis, a new approach in solving the contact phenomena was presented by introducing a torsional degrees of freedom. In program package RotorDyn linear and also nonlinear normal force model are implemented as well as different friction force models based on Coulomb friction model. In RotorDyn program package different integration scheme are implemented like HHT method and Generalized method. Detailed parameter studies were performed with analysis of a numerous effects on rotor – stator contact. Obtained results are compared with experimental and numerical results found in literature, also with own experimental results obtained by eight-channel measuring equipment on specially designed test rig and presented in a form of time and frequency plots, orbits and spectral maps.
Keywords
rotor dynamics; rotor-stator contact; flexural and torsional vibrations; sliding and rolling friction; finite element method; numerical modeling; vibration measurement
Hrčak ID:
28409
URI
Publication date:
27.12.2006.
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