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Citation:
　Jiayang Gu,Jie Wu,Enrong Qi,et al.Time Domain Calculation of Connector Loads of a Very Large Floating Structure[J].Journal of Marine Science and Application,2015,(2):183-188.[doi:10.1007/s11804-015-1307-9]
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Time Domain Calculation of Connector Loads of a Very Large Floating Structure

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Title:
Time Domain Calculation of Connector Loads of a Very Large Floating Structure
Author(s):
Jiayang Gu;  Jie Wu;  Enrong Qi;  Yifeng Guan and Yubo Yuan
Affilations:
Author(s):
Jiayang Gu1;  Jie Wu1;  Enrong Qi2;  Yifeng Guan1;  Yubo Yuan1
1. School of Naval Architecture and Marine Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
2. China Ship Scientific Research Center, Wuxi 214082, China
Keywords:
very large floating structures (VLFSs);  time domain motion differential equation;  collision;  connector;  impact load;  hydrodynamic coefficient;  oscillation load;  impact load
分类号:
-
DOI:
10.1007/s11804-015-1307-9
Abstract:
Loads generated after an air crash, ship collision, and other accidents may destroy very large floating structures (VLFSs) and create additional connector loads. In this study, the combined effects of ship collision and wave loads are considered to establish motion differential equations for a multi-body VLFS. A time domain calculation method is proposed to calculate the connector load of the VLFS in waves. The Longuet-Higgins model is employed to simulate the stochastic wave load. Fluid force and hydrodynamic coefficient are obtained with DNV Sesam software. The motion differential equation is calculated by applying the time domain method when the frequency domain hydrodynamic coefficient is converted into the memory function of the motion differential equation of the time domain. As a result of the combined action of wave and impact loads, high-frequency oscillation is observed in the time history curve of the connector load. At wave directions of 0° and 75°, the regularities of the time history curves of the connector loads in different directions are similar and the connector loads of C1 and C2 in the X direction are the largest. The oscillation load is observed in the connector in the Y direction at a wave direction of 75° and not at 0°. This paper presents a time domain calculation method of connector load to provide a certain reference function for the future development of Chinese VLFS.

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Memo

Memo:
Received date: 2014-2-12                    Accepted date: 2014-12-26
Foundation item: Supported by the National Natural Science Foundation of China (51309123), National Key Basic Research and Development Plan (973 Plan，2013CB036104), Jiangsu Province Natural Science Research Projects in Colleges and Universities (13KJB570002), Open Foundation of State Key Laboratory of Ocean Engineering (1407), “Qing Lan Project” of Colleges and Universities in Jiangsu Province, Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
Corresponding author: Jiayang Gu     E-mail:gujiayang@126.com
Last Update: 2016-06-24