考虑非线性阻尼、非线性复原力矩和随机波浪，建立了随机横浪中船舶运动的随机非线性微分方程。
The random nonlinear differential equation of ship's motion is established considering the nonlinear damping, nonlinear recover moment and random waves.
应用非线性谱分析法对随机波浪载荷的自由表面效应进行了研究，提出了一种新的计算模型。
The free surface effects of random wave forces are studied by means of nonlinear spectral analysis and a new calculating model is proposed.
本文的主要目的是研究非线性波浪载荷作用下多种应力成份组合的船体结构疲劳损伤计算。
The major purpose of this thesis is to do some research work on calculation of fatigue damage of ship hull structures with combined bending stress under nonlinear wave loads.
研究了铰接塔平台在波浪和海流作用下的非线性动力特性。
The nonlinear dynamics characteristic of articulated tower platform (ATP) subjected to waves and current loads is studied.
本文通过在波浪水池中进行不规则波的船模横摇衰减试验，研究了波浪对非线性横摇阻尼的影响。
In this paper, the effect of waves on nonlinear rolling damping is researched experimentally through attenuation test of a model ship rolling in irregular waves in a wave tank.
文中还就流动的非线性对物体的波浪扰动力和自由面波形的影响进行了讨论。
The effect of the nonlinearity on total wave exciting force and wave contour is discussed.
当前，海洋结构物波浪荷载的计算大多限于线性波理论以及低阶的非线性波理论，有时是不能满足工程精度需要的。
At present, the calculations of wave forces on Marine structures are confined to the linear and low-order non-linear wave theories, sometimes these are not satisfied with the requirements.
该文详细介绍了采用线性化法和多项式逼近法求解非线性波浪力谱密度的过程。
The calculation of the spectral density of non-linear wave forces is presented in detail, based on linearized approach and polynomial-approximated approach, respectively.
EB模型则可用于求解广阔海域内非线性不规则波浪的运动和变形过程。
The EB model is applicable to nonlinear and irregular wave motion in large area.
系泊运动的数学模型是一个具有指数回复力特性的非线性强迫振子，以波浪作用力为外激励。
The mathematic model was a nonlinear oscillator driven by wave exciting force while the restoring force was exponential.
本文给出了一个预报波浪诱导的船舶垂向运动和结构总体动响应的非线性时域水弹性力学微分分析法。
This paper presents a nonlinear hydroelastic differential analysis method of wave-induced vertical motions and structural responses of ships.
计算结果表明，非线性波浪载荷对船体结构疲劳损伤分析具有重要影响。
Calculation results show that nonlinear factors are important for fatigue strength analysis of ship structures.
结果表明，纵向运动对横摇的非线性静力耦合作用不存在，它们之间的耦合主要是由波浪引起的。
The result shows that the static coupling of longitudinal motions to the rolling equation is not exist, the coupling between them is mainly caused by waves.
首先，本文讨论船舶非线性横摇运动中非线性阻尼力矩和非线性复原力矩的数学表达形式，并建立船舶在波浪中的非线性横摇运动方程。
Firstly, mathematical expressions of nonlinear damping and nonlinear righting moment were discussed, and the equations for nonlinear rolling motions in waves were established.
用这种线性化方法对波浪力与非线性波浪力进行计算几乎没有误差。
The calculated wave drag forces by using this method have nearly no error as compared with the nonlinear values.
船舶在波浪中的非线性横摇是造成船舶倾覆的一个重要原因。
The nonlinear rolling of ship in waves is one of the important reasons for the ships capsizing.
再次，利用多尺度法分析船舶在波浪中接近主共振、亚谐共振和超谐共振时的非线性横摇运动，并给出三种共振的近似解。
Moreover, the multiscale method was used to study the main, ultraharmonic and subharmonic resonances of nonlinear rolling in waves, and the approximate solutions of the three resonances were given.
为快速有效地模拟三维波浪问题，采用高阶谱方法建立了完全非线性波浪的数值计算模型。
To simulate 3-d wave rapidly and effectively, a numerical simulation model of fully nonlinear waves was established using the high order spectral method.
本文应用势流理论和频域方法研究了三维浮体在深水域波浪中航行时的非线性绕射问题，该问题包括非线性兴波问题和非线性绕射问题。
In this paper, the nonlinear diffraction problem is studied with potential flow theory in frequency domain for three-dimensional floating body sailing in waves on deep water.
本文最后用该显式结合含弱非线性效应的缓坡方程，对复式浅滩地形上的波浪折射绕射进行了计算。
Making use of the explicit nonlinear formulation derived in this paper and the mild slope equation with weak non-linearity calculations are conducted for wave transformation in the compound shoals.
本文考虑随机波浪及船舶的非线性阻尼、非线性恢复力矩，建立船舶横摇运动的非线性微分方程。
The random waves, non-linear damp and ship non-linear restore moment are taken into consideration and the ship rolling non-linear differential equation is established.
首先，本文讨论船舶非线性横摇运动中非线性阻尼力矩和非线性复原力矩的数学表达形式，并建立船舶在静水中和波浪中的非线性横摇运动方程。
Firstly, mathematical expressions of nonlinear damping and nonlinear righting moment were discussed, and the equations for nonlinear rolling motions in still water and in waves were established.
建立二维非线性数值波浪水槽，模拟了规则波条件下破碎立波对直墙建筑物的作用。
A two-dimensional numerical wave flume is established to study the breaking standing wave action on a vertical-wall structure in the case of regular wave.
波浪是最常见的海洋动力因素之一，波浪由深水传播至浅水后，受到水深、海底地形等因素的影响，逐渐表现出非线性特性。
Water waves are the most common dynamic factor of the ocean. Due to water depth and terrain, shallow water waves show nonlinear characteristics gradually that impact the coastal engineering.
基于粘流理论建立了三维数值波浪水池，模拟了非线性波浪，并对规则波顶浪中前进的拘束船模的水动力进行了计算。
Numerical simulation of nonlinear waves and a restrained ship model advancing in regular heading waves inside a 3d viscous numerical wave tank (NWT) is carried out.
基于粘流理论建立了三维数值波浪水池，模拟了非线性波浪，并对规则波顶浪中前进的拘束船模的水动力进行了计算。
Numerical simulation of nonlinear waves and a restrained ship model advancing in regular heading waves inside a 3d viscous numerical wave tank (NWT) is carried out.
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