Dynamic Response Analysis of the Equivalent Water Depth Truncated Point of the Catenary Mooring Line

作     者：ZHANG Huo-ming KONG Ling-bin GUAN Wei-bing HUANG Sai-hua FANG Gui-sheng 

作者机构：College of Metrology and Measurement EngineeringChina Jiliang UniversityHangzhou 310018China State Key Laboratory of Satellite Ocean Environment Dynamics(Second Institute of OceanographySOA)Hangzhou 310012China Institute of Hydraulic & Environmental EngineeringZhejiang University of Water Resources and Electric PowerHangzhou 310018China Mechanical and Automotive Engineering CollegeZhejiang University of Water Resources and Electric PowerHangzhou 310018China 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2017年第31卷第1期

页      面：37-47页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0908[农学-水产] 08[工学] 0707[理学-海洋科学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0802[工学-机械工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：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) the Open Fund Project of Second Institute of Oceanography(Grant No.SOED1706) 

主　　题：mooting line truncated point dynamic response lumped-mass method time domain simulation 

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.