Dynamic Analysis of Rotors with Imbalance, Bent and Misalignment

Please enable javascript in your browser.

Meisami, Farhad | 2010

504 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41628 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Behzad, Mehdi; Mehdigholi, Hamid
Abstract:
In this thesis a comprehensive software code has been developed for analyzing dynamic behavior of rotary systems. Dynamic analysis of rotors consists of calculating critical speeds, mode shapes and vibrational response. The code is also capable to model unbalance, bend and misalignment faults. Due to the complexity of current misalignment models, a simplified model was developed. Rotor, disks and bearings were modeled and joined together to build the complete model. A novel procedure was suggested for modeling of multisectional rotors (such as, Tie-rod and Tie-bolts). Vibrational response has been calculated for each of the faults and effect of shaft and bearing parameters has been observed. At the end, response of an industrial rotor (a turbo-generator set) was calculated and the results of the model compared with actual and measured signals.
Keywords:
Rotor Modeling ; Bearing Modeling ; Misalignment Fault ; Multisectional Rotors

No TOC