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Numerical Analysis Method of Thermal Deflection and its Affection on Vibration Response of Rotor

Ren Pingzhen Lu Shan Zhao Ming (Northwestern Polytechnical University, Xi′an 710072)  
In this paper, a numerical analysis method of rotor′s thermal deflection and its affection on vibration response is studied. In the method, three dimensional FEM is used to compute the temperature field and thermal bending deformation of rotor, or a first order vibration mode distribution procedure is adopted to estimate the thermal bending deformation of rotor. A transfer matrix method is also employed to compute thermal bending vibration response. The results obtained from this paper fit well with theoretical and experimental ones. The numerical method presented here can be applied to the analyses of thermal deflection and its affection on vibration response of a real rotor.
【CateGory Index】: TH113
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