Special Issue of the Society of Naval Architects of Korea (대한조선학회 특별논문집)
- 2006.09a
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- Pages.53-58
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- 2006
A Study on Structural Dynamic Modification of Ship Structure by Using FRF Synthesis Method
전달함수 합성법을 이용한 선박구조변경
- Choi, Su-Hyun (Ship & Ocean R&D Institute, Daewoo Shipbuilding & Marine Engineering Co., Ltd.) ;
- Kim, Kuk-Su (Ship & Ocean R&D Institute, Daewoo Shipbuilding & Marine Engineering Co., Ltd.)
- Published : 2006.09.30
Abstract
When the vibration troubles occur on the ship structure during the sea trial, the rectification work is very restricted because of in-situ limitation. Usually the finite element method is used to improve vibration characteristics of the structure, but it takes lots of time and effort in modeling the structure and adjusting the finite element model in order to consider appropriate boundary conditions of a complex ship structure. Therefore, experimental methods have been in general suggested to obtain proper countermeasures without time-consuming in modeling. In this paper, FRF(frequency response function) synthesis method is applied to estimate natural frequency of the modified ship structure, which is obtained from experimental and numerical methods.
Keywords