한국해양대학교

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분지를 갖는 함정 추진축계의 고유 비틀림진동 해석에 관한 연구

Title
분지를 갖는 함정 추진축계의 고유 비틀림진동 해석에 관한 연구
Alternative Title
A Study on the Analysis of Natural Torsional Vibration of Branched Shafting System for a Naval Vessel Propulsion
Author(s)
윤영권
Publication Year
2007
Publisher
한국해양대학교 대학원
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175091
http://repository.kmou.ac.kr/handle/2014.oak/9247
Abstract
A propulsion shafting system in a naval vessel consists of twin propeller shafts mainly according to the requirement of high power, high speed and various operating modes.

Destroyer is intended for multi-purpose naval vessel. Destroyer’s propulsion system consists generally of two controllable pitch propellers(twin screws) powered by a combined gas turbine and gas turbine(COGAG) propulsion system.

Two gas turbines are connected at the reduction gear assembly by a independent driving shaft. Each gas turbine set, gear drive and shaft line are mechanically not restrained each other.

Therefore, the system includes the branched shafting and such a branched shafting system has very intricate vibrating characteristics.

In this study, to evaluate vibrational characteristics of the propulsion shafting system some analytical methods are studied and vibrational equations are derived. And then, torsional natural frequencies and mode shapes of the system are analyzed.

The analysis, including natural frequencies and mode shapes, for 12 cases of the system is conducted using ANSYS code with an equivalent mass-elastic model.
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기관시스템공학과 > Thesis
Files in This Item:
000002175091.pdf Download

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