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Optimum Design of Viscous Fluid Damper for Reducing the Torsional Vibration of Propulsion Shaft System
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 Title & Authors
Optimum Design of Viscous Fluid Damper for Reducing the Torsional Vibration of Propulsion Shaft System
Park, Sang-Yun; Han, Kuk Hyun; Park, Ju-Min; Kwon, Sung Hun; Song, Ohseop;
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In this study, the torsional vibration analysis for a marine propulsion system is carried out by using the transfer matrix method(TMM). The torsional moment produced by gas pressure and reciprocating inertia force may yield severe torsional vibration problem in the shaft system which results in a damage of engine system. There are several ways to control the torsional vibration problem at hand, firstly natural frequencies can be changed by adjusting shaft dimensions and/or inertia quantities, secondly firing order and crank arrangement are modified to reduce excitation force, and finally lower the vibration energy by adopting torsional vibration damper. In this paper, the viscous torsional vibration damper is used for reducing the torsional vibration stresses of shaft system and it is conformed that optimum model of the viscous damper can be determined by selecting the geometric design parameters of damper and silicon oil viscosity.
Transfer Matrix Method;Viscous Damper;Torsional Vibration Analysis;Optimum Design;Damping Coefficient;
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