Analysis of Torsional Vibration In Rotating Machine

Abstract

Industries worldwide are rapidly developing advanced complex machinery. One area that must be considered in these engineering systems is the rotating machines torsional vibrations. Hence it can lead to early failure and continuous downtime and then expensive repairs to machinery if neglected or not considered. The torsional vibrations are a type of severe twisting motion due to improper designed rotation machinery. It usually causes noticeable sound disturbances and potential fatigue problems. The main objective of this study is to write a program that can analyze torsional vibration in the primary design stages of the rotating machines. the MATLAB program had been used to write this program. This study involves introduction to the analysis of torsional vibrations in rotating mechanisms and the benefits of vibration analysis in addition to that a models to simulates the rotating mechanisms had been designed and manufactured and its mathematical equations been written, and been analyzed using Newton's laws of motion and method of Holzer and two on the basis of which was built analysis software. And also some more information on the experiments conducted to analyze the vibrations using (Microlog CMVA 60 data collector analyzer) to make sure of the validity of the program. This study also shows comparisons between the analytical results and the results of a measurement. Comparing the results we found that the differences between the results of the experiments and the MATLAB program (about 41.95%) . Finally, which we found that the program is designed to be valid for the analysis of torsional vibrations in rotating machines.