Stochastic hydroelastic analysis of a very large floating structure using pseudo-excitation method

被引：8

作者：

Li, Hai-tao ^{[1
]}

Wang, Qi-bin ^{[1
]}

Zong, Zhi ^{[1
]}

Sun, Lei ^{[1
]}

Liang, Hui ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Naval Architecture, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China

来源：

APPLIED OCEAN RESEARCH | 2014年 / 48卷

基金：

中国国家自然科学基金;

关键词：

VLFS; Hydroelasticity; Pseudo-excitation method; Stationary stochastic response; PONTOON-TYPE; PLATE; VLFS; RESPONSES; WAVES;

D O I：

10.1016/j.apor.2014.08.003

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

This paper is concerned with the linear hydroelastic response of a pontoon-type very large floating structure (VLFS) in short-crested irregular waves. The linear potential theory is employed for the analysis of VLFS in frequency domain. To decouple the fluid structure interaction, the higher-order boundary element method (HOBEM) combined with the finite element method (FEM) is adopted. VLFS is modeled as a Mindlin plate, and the mode superposition method is used to reduce the dimension of dynamic equations. The pseudo-excitation method (PEM) is adopted to analyze the stationary stochastic response of the floating structure. The efficiency of this new calculation scheme with the application of PEM is investigated in comparison with the conventional method for stochastic response by analyzing the computational complexity theoretically. Finally, the new calculation scheme is validated by comparing with the experimental data as well as the existing numerical results calculated in the conventional way. In addition, the efficiency of the present numerical approach is also testified which indicates that the proposed numerical scheme is time-saving. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：202 / 213

页数：12

共 42 条

[11]

Hamamoto T, 2002, INT OFFSHORE POLAR E, P290

[12] Stochastic fluid-structure interaction of large circular floating islands during wind waves and seaquakes [J].

Hamamoto, T .

PROBABILISTIC ENGINEERING MECHANICS, 1995, 10 (04) :209-224

[13]

Intel&REG

[14]

Math Kernel Library Reference Manual, 2008, INT MATH KERN LIB RE

[15]

Kashiwagi M., 1998, J. Mar. Sci. Technol., V3, P37, DOI [10.1007/BF01239805, DOI 10.1007/BF01239805]

[16]

Kim J. W., 1998, P 2 INT C HYDR MAR T, P47

[17]

Kring D., 2000, MAR STRUCT, V13, P301, DOI [https://doi.org/10.1016/S0951-8339(00)00033-2, DOI 10.1016/S0951-8339(00)00033-2]

[18] Hydroelastic response of a very large floating structure over a variable bottom topography [J].

Kyoung, JH ;

Hong, SY ;

Kim, BW ;

Cho, SK .

OCEAN ENGINEERING, 2005, 32 (17-18) :2040-2052

[19] A NEW METHOD FOR EVALUATING SINGULAR-INTEGRALS IN STRESS-ANALYSIS OF SOLIDS BY THE DIRECT BOUNDARY ELEMENT METHOD [J].

LI, HB ;

HAN, GM ;

MANG, HA .

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 1985, 21 (11) :2071-2098

[20] Pseudo Excitation Method and Some Recent Developments [J].

Lin, J. H. ;

Zhang, Y. H. ;

Zhao, Y. .

PROCEEDINGS OF THE TWELFTH EAST ASIA-PACIFIC CONFERENCE ON STRUCTURAL ENGINEERING AND CONSTRUCTION (EASEC12), 2011, 14

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