Hydro-elastoplastic analysis of floating plate structures = 부유식 평판 구조물에 대한 유탄소성 해석

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Hydro-elastoplastic analysis of floating plate structures subjected to time-dependent external loads is presented, in which elastoplastic material behaviors are coupled with linear surface gravity waves. Time-domain incremental coupled equations for the analysis are derived as formulating incremental equilibrium equations of floating plate structure and impulse responses functions associated with hydrodynamic pressures in the time domain. The present formulation can describe the interactions between fluids and structures with material nonlinearity. Also, a time-domain incremental nonlinear solution procedure is proposed. In the solution procedure, an implicit return mapping algorithm to simulate plastic behaviors of floating plate structures and a direct coupling method to construct frequency-wave inddependent metrics, which can be converted to IRFs by Fourier transformation, are employed. Through numerical examples of plate structures floating on the free surface of water, the capability and the performance of the proposed solution procedure are demonstrated.
Advisors
Lee, Phill-Seungresearcher이필승researcher
Description
한국과학기술원 :기계공학과,
Publisher
한국과학기술원
Issue Date
2017
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 기계공학과, 2017.2,[viii, 137 p. :]

Keywords

Hydro-elastoplastic analysis; Floating plate structures; Very large floating structures(VLFS); Impulse response function; Nonlinear structural analysis; Finite element method; Boundary element method; Direct coupling method; 유탄소성 해석; 부유식 평판 구조물; 초대형 부유식 구조물; 임펄스 응답 함수; 비선형 구조 해석; 유한요소법; 경계요소법; 직접연성법

URI
http://hdl.handle.net/10203/241703
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=675641&flag=dissertation
Appears in Collection
ME-Theses_Ph.D.(박사논문)
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