| Dynamic Response Analysis of the Equivalent Water Depth Truncated Point of the Catenary Mooring Line |
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| 作者姓名： | ZHANG Huo-ming KONG Ling-bin GUAN Wei-bing HUANG Sai-hu FANG Gui-sheng |
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| 作者单位： | College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China,College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China,State Key Laboratory of Satellite Ocean Environment Dynamics(Second Institute of Oceanography, SOA), Hangzhou 310012, China,Institute of Hydraulic & Environmental Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China,Mechanical and Automotive Engineering College, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China |
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| 基金项目： | This work was financially supported by the Natural Science Foundation of Zhejiang Province (Grant Nos. Y14E090034 and Y13F020140), the Young Scientist Training Program in Zhejiang Province (Grant No. 2013R60G7160040), the State Key Laboratory of Ocean Engineering of Shanghai Jiao Tong University for the Open Fund Project (Grant No. 1516), and the Open Fund Project of Second Institute of Oceanography (Grant No. SOED1706). |
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| 摘 要： | The real-time computer-controlled actuators are used to connect the truncated parts of moorings and risers in the active hybrid model testing system. This must be able to work in model-scale real time, based on feedback input from the floater motions. Thus, mooring line dynamics and damping effects are artificially simulated in real time, based on a computer-based model of the problem. In consideration of the nonlinear characteristics of the sea platform catenary mooring line, the equations of the mooring line motion are formulated by using the lumped-mass method and the dynamic response of several points on the mooring line is investigated by the time and frequency domain analysis method. The dynamic response of the representative point on the mooring line is analyzed under the condition of two different corresponding upper endpoint movements namely sine wave excitation and random wave excitation. The corresponding laws of the dynamic response between the equivalent water depth truncated points at different locations and the upper endpoint are obtained, which can provide technical support for further study of the active hybrid model test.
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| 关 键 词： | mooring line truncated point dynamic response lumped-mass method time domain simulation |
| 收稿时间： | 2015/10/28 0:00:00 |
| 修稿时间： | 2016/5/13 0:00:00 |
Dynamic Response Analysis of the Equivalent Water Depth Truncated Point of the Catenary Mooring Line |
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| ZHANG Huo-ming,KONG Ling-bin,GUAN Wei-bing,HUANG Sai-hu,FANG Gui-sheng.Dynamic Response Analysis of the Equivalent Water Depth Truncated Point of the Catenary Mooring Line[J].Ocean Engineering,2017,31(1):37-47. |
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| Authors: | ZHANG Huo-ming KONG Ling-bin GUAN Wei-bing HUANG Sai-hua and FANG Gui-sheng |
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| Institution: | College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China,College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China,State Key Laboratory of Satellite Ocean Environment Dynamics(Second Institute of Oceanography, SOA), Hangzhou 310012, China,Institute of Hydraulic & Environmental Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China and Mechanical and Automotive Engineering College, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China |
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| Abstract: | The real-time computer-controlled actuators are used to connect the truncated parts of moorings and risers in the active hybrid model testing system. This must be able to work in model-scale real time, based on feedback input from the floater motions. Thus, mooring line dynamics and damping effects are artificially simulated in real time, based on a computer-based model of the problem. In consideration of the nonlinear characteristics of the sea platform catenary mooring line, the equations of the mooring line motion are formulated by using the lumped-mass method and the dynamic response of several points on the mooring line is investigated by the time and frequency domain analysis method. The dynamic response of the representative point on the mooring line is analyzed under the condition of two different corresponding upper endpoint movements namely sine wave excitation and random wave excitation. The corresponding laws of the dynamic response between the equivalent water depth truncated points at different locations and the upper endpoint are obtained, which can provide technical support for further study of the active hybrid model test. |
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| Keywords: | mooring line truncated point dynamic response lumped-mass method time domain simulation |
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