Analysis of offshore systems in random waves
Analysis of offshore systems in random waves
复制标题
随机波浪中的近海系统分析
DOI：
10.1007/978-94-007-0289-9_30
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Ellermann
中科院分区：
文献类型：
--
作者：
Ellermann
本文讨论了浮式海洋平台在波浪中的运动分析。重点在于不同的方法来确定概率密度函数。波浪作用下系统的动力学行为分析是海洋工程研究的重要内容。这些结构包括具有非常明显的非线性特性的组件，这些特性影响动态特性。浮式结构物的非线性动力学的系统分析通常通过附加的假设来促进，例如通过周期函数或运动方程的部分线性化来建模的波浪。这些假设使得关于第一次通过时间或上交叉概率的结论变得困难甚至不可能。本文讨论了不同的方法来描述随机力作用在浮式结构物和分析所产生的运动。
This paper addresses the analysis of the motion of floating offshore systems in waves. The focus lies on different approaches for the determination of probability density functions. The analysis of the dynamical behavior of systems in ocean waves is an important part in offshore engineering. These structures involve components with very distinct nonlinear characteristics which affect the dynamics. The systematic analysis of the nonlinear dynamics of floating structures is generally facilitated by additional assumptions, such as waves modeled by periodic functions or linearizations of parts of the equations of motion. These assumptions make conclusions about the first passage time or upcrossing probabilities difficult or even impossible. This paper addresses different approaches for the description of random forces acting on floating structures and for the analysis of the resulting motion.