Nonlinear Dynamics and Vibration Analysis of Rotating Machinery

Abstract

In a variety of engineering disciplines, including the mechanical, aerospace, and energy industries, the study of nonlinear dynamics and vibration analysis of rotating machinery has become increasingly important. In many applications, including turbines, engines, compressors, and pumps, rotating machinery is essential for both the performance and safety of the entire system. Nonlinearities, on the other hand, add intricate dynamic behaviours and vibration phenomena into these systems, which can result in subpar performance, excessive wear, and even catastrophic failures.The goal of this research is to improve rotating machinery's design, operation, and maintenance by examining the nonlinear dynamics and vibration properties.In order to comprehend the complex interplay between the dynamics of the rotor, the dynamics of the bearing, and the nonlinear forces, the analysis makes use of sophisticated mathematical models and computer tools. To appropriately depict the system's nonlinear behaviour, important factors including rotor imbalance, shaft misalignment, bearing clearance, and non-circular journal shapes are taken into account.The objective of the project is to create reliable techniques for locating and forecasting important vibration modes, resonances, and instabilities in rotating machinery. Techniques like nonlinear time series analysis, bifurcation analysis, and chaos theory are used in this. The results of this study can help in the creation of efficient vibration mitigation plans and condition monitoring tools as well as useful insights into the underlying physics of rotating machinery dynamics. This paper findings may help to increase the performance, reliability, and lifetime of rotating machinery, which would increase operational effectiveness and lower maintenance costs across a range of industrial sectors.