华中科技大学学报（自然科学版）Issue(7)：124-128,5.DOI:10.13245/j.hust.150725
深水非线性弹簧截断张紧式系泊系统动力特性
Dynamic characteristics of deepwater truncated taut mooring system with nonlinear springs
摘要
Abstract
Through analysis of mechanical characteristics of taut mooring system ,the springs were proposed to substitute the truncated lines and simulate their stiffness property ,the stiffness of the up‐per lines above truncation points were invariant ,the method to determine the length and position of the springs and the nonlinear coefficients were discussed ,then the static similarity was guaranteed . The computing method to change the diameter and mass per length of lines were put forward to simu‐late the dynamic characteristics accurately .A internal turret moored FPSO in 3 048 m water was trun‐cated to 1 000 m and 500 m respectively ,and after the static analysis and dynamic analysis in time do‐main ,the pretension and top angle of lines ,curves of static characteristics ,global response ,mooring tensions were all found to agree well with each other between truncated and un‐truncated system , w hich proved the robustness and reliability of the proposed truncation method .关键词
张紧式系泊/等效截断/非线性弹簧/静力/动力Key words
taut mooring/equivalent truncation/nonlinear spring/static force/dynamic force分类
交通工程引用本文复制引用
王宏伟,罗勇,马刚,孙丽萍..深水非线性弹簧截断张紧式系泊系统动力特性[J].华中科技大学学报（自然科学版）,2015,(7):124-128,5.基金项目
高等学校学科创新引智计划资助项目（B07019）；高等学校博士学科点专项科研基金资助项目（20132304120008）；中央高校基本科研业务费专项资金资助项目（HEUCFD1402，HEUCFD1424）． （）
