Open AccessVibration Characteristics of the Bearing Rotor Shaft
Author(s) -
Karrar Baher,
Qasim A. Atiyah,
Imad A. Abdulsahib
Publication year - 2022
Publication title -
mağallaẗ al-nahrayn li-l-ʿulūm al-handasiyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2521-9162
pISSN - 2521-9154
DOI - 10.29194/njes.25010049
Subject(s) - vibration , bearing (navigation) , workbench , rotor (electric) , helicopter rotor , fast fourier transform , natural frequency , frequency domain , rotordynamics , finite element method , accelerometer , acoustics , signal (programming language) , software , structural engineering , computer science , engineering , mechanical engineering , physics , algorithm , artificial intelligence , visualization , computer vision , programming language , operating system
In this work, the vibrations in the rotor-bearing system are studied experimentally and theoretically using ANSYS Workbench 2020 R1 software to compute the natural frequencies and mode shapes. In the experimental part, the LABVIEW software was used to examine the signal of the frequency domain values obtained from the accelerometer sensors, based on Fast Fourier Transform (FFT) technology and dynamic response spectrum. in the theoretical part, the natural frequencies are determined based on the finite element method for analyzing the system and knowing its behavior and vibration response level. The results showed that the level of vibration becomes higher at high rotational speeds, and it becomes large when the distances between the bearings are large, according to the bearing position and type used in the system. in this work can be concluded, the system is usually affected by the dynamic response around it and is difficult to separate from it, and the vibrations in the system can be controlled by adding an external damping source, which gives the system more stable. A system operating at high speeds can give a large vibration and an unbalanced response.