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기준 좌표계에 따른 탄성체의 일반화 파랑 하중 및 응답에 대한 연구

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Abstract
In this paper, the generalized hydrodynamic force and response of a flexible body are calculated at different reference coordinate systems. We generalize the equation of motion for a flexible body by using the conservation of momentum (Mei et al., 2005). To obtain the equations in the generalized mode, two different reference coordinates are adopted. The first is the body-fixed coordinate system by a rigid body motion. The other is the inertial coordinate system which has been adopted for the analysis. Using the perturbation scheme in the weakly-nonlinear assumption, the equations of motion are expanded up to second-order quantities and several second-order forces are obtained. Numerical tests are conducted for the flexible barge model in head waves and the vertical bending is only considered in the hydroelastic responses. The results show that the linear response does not have the difference between the two formulations. On the other hand, second-order quantities have different values for which the rigid body motion is relatively large. However, the total summation of second-order quantities has not shown a large difference at each reference coordinate system.
Author(s)
허경욱최윤락
Issued Date
2021
Type
Article
Keyword
Hydroelasticity(유탄성)Perturbation method(섭동법)Generalized mode method(일반화 모드법)Equation of motion(운동방정식)Body-fixed coordinate system(물체 고정 좌표계)
DOI
10.3744/SNAK.2021.58.6.348
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9122
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_nrf_kci_oai_kci_go_kr_ARTI_9895655&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,%EA%B8%B0%EC%A4%80%20%EC%A2%8C%ED%91%9C%EA%B3%84%EC%97%90%20%EB%94%B0%EB%A5%B8%20%ED%83%84%EC%84%B1%EC%B2%B4%EC%9D%98%20%EC%9D%BC%EB%B0%98%ED%99%94%20%ED%8C%8C%EB%9E%91%20%ED%95%98%EC%A4%91%20%EB%B0%8F%20%EC%9D%91%EB%8B%B5%EC%97%90%20%EB%8C%80%ED%95%9C%20%EC%97%B0%EA%B5%AC&offset=0
Publisher
대한조선학회 논문집
Location
대한민국
Language
한국어
ISSN
1225-1143
Citation Volume
58
Citation Number
6
Citation Start Page
348
Citation End Page
357
Appears in Collections:
Engineering > Naval Architecture and Ocean Engineering
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