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Investigation on the influence of unbalanced shaft component in gearbox on displacement using the Newmark-β method
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Investigation on the influence of unbalanced shaft component in gearbox on displacement using the Newmark-β method
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Investigation on the influence of unbalanced shaft component in gearbox on displacement using the Newmark-β method
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Journal Article
Investigation on the influence of unbalanced shaft component in gearbox on displacement using the Newmark-β method
2025
Overview
This study introduces an enhanced numerical approach for analyzing the dynamic behavior of a rotor-bearing system subjected to unbalanced excitation from a gearbox drive shaft. The Newmark-β method with the integration of a variable time-step algorithm was used, allowing the system to be solved rapidly and accurately without compromising stability. This technique enables a precise computation of displacement and torsional deformation of the rotating shaft during its operational cycle. The proposed computational model is validated against experimental data, showing deviations of displacement in normal operation below the critical speed of about 6%. A comprehensive parametric analysis is conducted to evaluate the influence of rotational speed, trial mass, and initial phase angle on the system dynamics. The findings confirm that our enhanced numerical approach yields rapid convergence and reliable predictions, making it a valuable tool for dynamic analysis of rotating systems.
Publisher
Public Library of Science,Public Library of Science (PLoS)
