Studies on the Dynamic Difference of Truncated Mooring Line in Hybrid Model Test 混合模型试验中截断系泊缆动力特性差异研究
A system model of a mooring line was constructed according to the NARMAX model theory. 根据带控制变量的非线性自回归滑动平均(NARMAX)模型理论,建立了锚泊线的系统模型。
Numerical example showed that the parametric equation is rational to describe the shape of mooring line. 算例表明,描述锚链线形状的参数方程是合理的。
Calculating method of mooring line tension based on catenary theory 基于准悬链线理论的舰船缆绳张力计算
By using the perturbation method, the frequency response functions of a mooring line up to the second order were obtained in a previous paper by the authors. 试验采用随机振荡法,测量并记录了锚泊线上端点的运动及张力,由此测量数据分析频率响应函数。
The sinker form also influences the mooring line force. 配重形式对锚绳力的大小亦产生一定的影响。
Firstly, analyze and compare the material and character of mooring line. 分析比较锚泊线应用的具体成分及其特性。
Static bifurcation characteristic and Hopf bifurcation characteristic were investigated while current velocities and mooring line lengths were defined as the bifurcation control parameters. 以来流速度和系缆长度为分岔控制参数,研究了船舶系泊运动的静态分岔与Hopf分岔特性。
Wave period greatly influence mooring line forces and it increase with wave period. 波浪周期对船舶系缆力的影响比较大,系缆力随着波浪周期的增大而增大。
This paper investigates the effect of third-order terms of the expression of hydrodynamic force acting on the mooring line on the result of perturbation method used in the mooring line dynamic analysis. 本文研究了作用在锚泊线上的水动力表达式中三阶项对锚泊线动力分析的影响。
The Effect of Third-Order Perturbation on the Result of the Mooring Line Dynamic Analysis 三阶摄动对锚泊线动力分析的影响
The method proposed by NDBC is used to solve the dynamic problem of moored buoy. In this method, the dynamic equations of mooring line were linearized while the interaction between buoy motions and cable motions is taken into consideration. 采用美国数据浮标中心(NDBC)提出的分析方法,即将锚泊线动力方程线性化,并考虑到锚泊线与浮标体之间相互耦合的关系,在频率域中对单点系泊浮标进行了动力分析。
This paper proposes an intelligent processing method of tabulated data used in the safety system of mooring line with the application of artificial neural network ( ANN). 针对船用系泊缆绳安全智能报警系统中的表格试验数据,提出了应用神经网络技术的智能数据处理方法。
The influence of different current velocities and mooring line lengths on the dynamic response of vessels and mooring force was investigated. 探讨了不同来流速度和系缆长度对于船只的动力学响应和系缆力的影响。
The solutions are related to first-order responses of mooring line and second-order floating structure oscillation, respectively. 其解分别与锚链的一阶运动响应和浮式结构物的二阶运动有关。
The mooring line forces are the result of interaction of ship motion and content. 各船型的系缆力变化规律没有显著差别,系缆力是船舶运动量(对应速度力)和船舶吨位(对应惯性力)综合作用的结果。
The analysis of mooring line dynamics 锚泊线的动力分析
Mooring positioning system performance depends mainly on the ocean environmental conditions, the environmental loads acting on floating structure and mooring lines, the material and dynamic performance of mooring line, the arrangement of mooring lines, water depth and other factors. 锚泊定位系统性能主要取决于海洋环境条件、浮式结构物和锚泊线所受的环境荷载作用、锚泊线的材料及其动力性能、锚泊线布置形式、海水水深等因素的影响。
Combined with the present key location technique of ocean platforms, this study makes research on response of mooring line on different work conditions. 本研究结合当今海洋采油平台的主要定位方式,以浮体锚泊线响应为研究对象,对不同工况下的锚泊线响应进行分析研究。
Considering mooring line weight and non-linear elongation, the mathematical model for calculating mooring line tension is improved. 改进了船舶缆绳张力的计算模型,充分考虑了缆绳的自重和非线性应变。
In this paper, the author choose a semi submersible, which will be set up in South China Sea, for truncation design based on static equivalence. Then the truncated single mooring line and truncated mooring system are used for dynamic difference studies. 基于动力特性上的差异研究,本文选取某座即将工作于中国南海的半潜平台进行基于静力相似截断系泊系统设计,对截断系泊缆,截断系泊系统进行了一系列动态差异研究。
Boundary element method and Morison formulation are applied in this paper for hydrodynamic analysis, and a geometrically nonlinear finite element method is developed to solve the mooring line dynamics. The coupled dynamic analysis of floating structure and its mooring lines is executed in time domain. 本文应用边界元方法和Morison公式对浮式结构物进行水动力分析,应用几何非线性有限元方法计算系泊缆索张力,并在时域内对浮式结构物及其系泊缆索进行了耦合分析。
Result show that buoy can reduce the dynamic tension of mooring line, but bring the larger displacement. 计算结果表明浮筒能明显地减少锚泊线动张力,但位移较大。
The mooring line between the ALT and tanker is represented by an unsymmetrical, piecewise-nonlinear restoring function. 连接铰接塔和油轮的系泊缆绳用一不对称的、分段非线性恢复力函数来表示。
The complicated mechanical properties of the mooring line are the key technical problems which needs to be solved above all in the engineering application of the new type mooring system with synthetic fiber ropes. 作为一种采用合成纤维材料系缆的新型系泊系统,系缆复杂的力学特性是其工程应用需要首先认识并解决的关键技术问题。
Because of the effects of environmental load in deep water, the physical characters of the mooring line material and the configuration, the analysis of the mooring lines involves nonlinearity due to fluid-solid coupling, geometry nonlinearity and material nonlinearity. 由于深水环境载荷和锚泊材料物理特性及锚链构型影响,锚泊系统分析涉及到流固耦合非线性、几何非线性、材料非线性等运动稳定性问题。
Based on the above two tests, the effect of mooring line and riser on the global motion of the floating platform as well as the coupled effect are compared and analyzed. 通过这些测试,比较和分析了系泊索和立管对浮式平台总体响应的影响及其耦合效应。
The results clearly show the damping from the heave plates and mooring line is able to reduce the dynamic response for heave and especially the low frequency motion for surge. 研究结果清楚地显示来自垂荡板和系泊索的阻尼能够减小平台垂荡方向的动力响应特别是纵荡方向的低频运动。
While mooring line directly affect the performance of mooring system reliability, to reasonably select and design the lines has become the focus of the Spar platform mooring system design. 锚泊线的性能直接影响到锚泊系统的可靠性,因此它的合理选择及设计成为Spar平台锚泊系统设计的重点。
Then, the static and dynamic analysis of a vertical mooring line attached to a buoy is conducted. Both the quasi-static and dynamic analysis results are presented, the effects of the line dynamics can be observed. 然后对一个浮标垂向锚缆进行了静动力分析,分别给出了准静态分析和动态分析的计算结果,说明了锚缆动力效应的影响。