ON A RESEARCH TORSIONAL VIBRATIONS IN DAMPED SHAFT SYSTEMS  WITH MULTIPLE DEGREES OF FREEDOM

Vu Xuan Truong; Tran The Van; Nguyen Quoc Manh

Vu Xuan Truong Hung Yen University of Technology and Education
Tran The Van Hung Yen University of Technology and Education
Nguyen Quoc Manh Hung Yen University of Technology and Education

Keywords: torsional vibration (TV), dynamic vibration absorber, Taguchi method, ANOVA

Abstract

Analytical research is particularly challenging when it comes to studying oscillations while accounting for the drag of the primary system. In this paper, a method for reducing torsional vibrations of a multi degrees of freedom shaft system with damping device (DVA) is presented. The method combines numerical method with simulation of torsional vibration response of the shaft system. The study’s goal is to identify the ideal values for DVA characteristics, such as spring stiffness, damping coefficient of viscosity, mass moment of inertia of dampers, and the number and placement of dampers. Springs and dampers are positioned radially. The system’s differential equations are solved using an algorithm built into the Maple software to find the system’s torsional vibration responses. The system’s equations of motion are constructed as a matrix. ANOVA is used to verify the Taguchi approach, which is used to solve multivariable optimization problems and establish the ideal DVA parameters. The data obtained indicate that the spring’s radial position is the element that most significantly affects the shaft’s oscillation. Torsional vibration in the system is significantly reduced by DVA with optimum parameters.

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