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http://dx.doi.org/10.5050/KSNVN.2003.13.12.923

Improvement of Dynamic Characteristics of Torsion on the Marine Propulsion Shafting System with Elastic Rubber Coupling  

Lee, D.C. (목포해양대학교 기관시스템공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.13, no.12, 2003 , pp. 923-929 More about this Journal
Abstract
As for the marine propulsion shafting system using 4 stroke diesel engine, it is common to apply a reduction gear box between diesel engine and shafting to increase propulsion efficiency, which requires inevitably a certain elastic coupling to avoid chattering and hammering inside of gear box. In this study, the optimum method of rectifying propulsion shafting system in case of 750 ton fishing vessel is theoretically studied in a view of dynamic characteristics of torsion. After the replacement of diesel engine and gear box, the torsional vibration get worse and so some countermeasures are needed. The elastic coupling is modified from a present rubber coupling of block type having relatively high torsional stiffness to a rubber coupling haying two serially connected elements. Torsional vibration damper was installed at crankshaft free end additionally and moment of inertia of flywheel was adjusted. The dynamic characteristics of shafting system was improved by these modification. The theoretical analysis of torsional vibration are compared to measurement results using two laser torsion meters during the sea trial.
Keywords
Elastic Rubber Coupling; Torsional Vibration; Dynamic Characteristics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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