Work

Investigation on the influence of unbalanced shaft component in gearbox on displacement using the Newmark-β method

Year: 2025

Type: article

Abstract: 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.

Source: PLoS ONE

DOI: 10.1371/journal.pone.0335632

Authors: Thanh Lam Tran, Vinh Phoi Nguyen, Chi Cuong Le, Thien Ngon Dang

Institutions: Ho Chi Minh City University of Technology and Engineering, Pham Van Dong University

Language: English

Topic: Gear and Bearing Dynamics Analysis

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,382