scholarly journals Nonlinear Vibration Analysis of Rotor System Using Component Mode Synthesis Method. Analysis using The Perturbation Method.

1999 ◽  
Vol 65 (637) ◽  
pp. 3499-3506 ◽  
Author(s):  
Takuzo IWATSUBO ◽  
Kenichi SHIMBO ◽  
Shozo KAWAMURA ◽  
Byungyoung MOON
Keyword(s):  
Perturbation Method ◽  
Nonlinear Vibration ◽  
Vibration Analysis ◽  
Synthesis Method ◽  
Rotor System ◽  
Component Mode Synthesis ◽  
Method Analysis

scholarly journals Nonlinear Vibration Analysis of Rotor considering Cogging and Harmonic Effects

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Shanle Li ◽  
Feng Liu ◽  
Hongyan Wang ◽  
Haijun Song ◽  
Kuilong Yu
Keyword(s):  
Nonlinear Vibration ◽  
Vibration Analysis ◽  
Magnetic Force ◽  
Rotor System ◽  
Kutta Method ◽  
Rotor Vibration ◽  
Motion Equations ◽  
Runge Kutta Method ◽  
Static Eccentricity ◽  
New Formula

This paper aims to investigate nonlinear vibration characteristics of rotor system considering cogging and harmonic effects. Firstly, relative permeance with eccentric was established and then corrected by correction factor caused by the cogging effect. Based on the new formula of relative permeance, the expression of unbalanced magnetic force was obtained, and the coefficient of cogging effect was defined. Motion equations of rotor system were established, and Runge–Kutta method was used to solve the equations. Results showed that errors between finite and analytical results were smaller considering cogging and harmonic effects. When the harmonics were taken into consideration, the vibration of rotor increases sharply. When the cogging and harmonics were taken into consideration simultaneously, the vibration of rotor decreased instead, which means that stator slots have the effect of reducing vibration in rotor system. Rotor vibration was axis symmetry with static eccentricity rather than central symmetry with no eccentricity, and double, four times, and six times supply frequency always existed in the components of main frequency with eccentric.

Dynamic stability and nonlinear vibration analysis of a rotor system with flexible/rigid blades

2016 ◽  
Vol 105 ◽  
pp. 633-653 ◽  
Author(s):  
Saeed Bab ◽  
Siamak E. Khadem ◽  
Amirhassan Abbasi ◽  
Majid Shahgholi
Keyword(s):  
Nonlinear Vibration ◽  
Dynamic Stability ◽  
Vibration Analysis ◽  
Rotor System
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