An efficient and practical method of wind load simulation. Commonly used in engineering practice using the wind speed spectrum, the use of multi-dimensional self.
提出了一种有效而实用的风荷载模拟方法。利用工程实际中普遍采用的风速谱,采用多维自。
The extremal spectrum density directions of components of wind wave spectrum types are different. This indicates that wave components of different frequencies have different principal directions.
不同波场类型的风浪方向谱各组成波的谱密度极值方向不同,表明不同频率的组成波有不同的主方向。
The principle of the aerodynamics is used to study the land wind field characteristic of the Daqing oil field and the wind load spectrum theory of oil rig derrick has been established.
运用空气动学原理,研究了大庆油田的陆地风场特性,进行了井架结构风载荷谱理论分析。
If accurate fitting formulas of spectrum and coherent function of the fluctuating wind pressure can be obtained, this method possesses great advantage in computing efficiency and accuracy.
指出如果能拟合出脉动风压谱和相干函数的精确公式,该方法在计算效率和计算精度方面均有较大的优势。
In order to consider the rotational effect of blades and determine the exact loads of the wind turbine system, wind field simulation based on the rotationally sampled spectrum was studied.
为考虑风力发电机组桨叶旋转效应,准确确定作用在桨叶风荷载,研究基于旋转样本谱进行风场模拟的问题。
Local intermittency measure is introduced to study the properties of local wavelet energy spectrum and to analyze the wind wave data obtained in a wind wave channel.
引入了局域小波能谱的局域间歇性度量,分析了不同风速下的风浪资料,结果表明,局域小波能谱可依局域频率分为三部分。
It is proved that the model of wind wave spectra with three parameters is reasonable. At the mean time, it is also proved that the relationship between spectrum parameters and fetch is right.
经过实测数据的验证,证明了三参量谱谱形的合理性,同时也进一步证明了谱参量随风区变化关系的正确性。
In this paper, reliability analysis method of tall building under the action of wind is put forward based on the equivalent wind spectrum theory.
作者基于等效风谱理论,给出了高层建筑结构在风荷载作用下可靠度分析的方法。
With the across-wind force spectrum, the across-wind dynamic responses of tall square-section buildings with aspect ratio of 6 is analyzed in the conditions of different ground and wind velocities.
引入横风力谱模型,分析了某高宽比为6的方形截面高层建筑在不同地貌和风速条件下的横风向风振响应。
The results indicate that the relative distribution of the field wind wave directional spectrum energy is closely related to the corresponding types of wave state.
结果表明,实测风浪方向谱能量的相对分布与相应的波场类型密切相关。
The response of the shell of reenforced concrete hyperbolic cooling towers to turbulent wind has been investigated theoretically by applying the spectrum method of random vibration theory.
钢筋混凝土双曲冷却塔壳体的阵风响应曾应用随机振动理论的谱分析法进行研究。
In the case of constant wind, the simulated results can accurately reproduce the spectrum and wave growth relation on which the proposed model is based.
在常风速情形中,模拟结果能精确地化为建立模拟所根据的谱和风浪成长关系。
This paper presents the load spectrum and an engineering estimating method of the fatigue life of GRP blade of large-scale wind turbine.
研究了大型风力机玻璃钢叶片载荷谱和疲劳寿命的工程估算方法。
But, from now on, the method that obtains the wind wave spectrum by the theory has not been got, because of the complexity of the objectivity.
但由于客观现象的复杂性,迄今尚没有自理论上获得风浪频谱的方法。
This paper proves that all the forms of wind wave frequency spectrum can be converted into the forms of variable dimension fractals.
文中还证明,各种形式的风浪频谱均可转化为变维分形的形式。
The results show that, when the wind shear of basic flow is not zero, there exists continuous spectrum of gravitational inertial wave and vortex wave.
结果发现:当基流存在切变时,无论是重力惯性波还是涡旋波都存在连续谱。
Because spectrum of ocean waves is short of observation information about the affect of wind force on ocean waves, a wind force model is constructed to simulate ocean waves under wind force.
而现有海浪谱缺少风对海浪影响的观测资料,因此我们进一步构造了风力模型,模拟风力作用下的海浪。
This paper introduces several methods retrieving wind direction from HF radar echo Doppler Spectrum and analyses the feature of those methods.
本论文介绍了现有的从高频雷达回波多普勒谱中提取风向的几种方法,分析了这几种方法的不足之处。
The power spectrum of wind speed time series sample is coincident with the aim power spectrum curve.
得到的风速时程样本的功率谱密度与目标曲线吻合很好。
Relating to the deduction of wind pressure uniform spectrum and calculation of wind load spectrum, analytical progress of M. Shinozuka method is systemically discussed.
系统阐述了这种方法的分析过程,其中涉及到脉动风压规格化功率谱的推导以及脉动风荷载功率谱的计算。
Based on the wavelet transform, the present paper introduces a kind of wind waves energy distribution, the so-called local wavelet energy spectrum, into studies of wind waves.
基于小波变换,引入了能刻画风浪局域结构的局域小波能谱。
The authors introduce a wind speed single parameter sea wave spectrum, present the fuzzy grading statistic method of wave height and period, and thereby give the method for making the f…
鉴于此,介绍了风速单参数海浪谱,并提出了对波高及周期统计的模糊分级统计方法,在此基础上给出了全面分析海洋环境载荷不确定性的模糊随机海浪谱及载荷谱的制作方法。
As an example, an experiment study of wind-wave spectrum in shallow water is compeleted to emphasize the superiority and importance of laboratory study.
最后,通过浅水波能谱试验,说明了推广与应用试验研究的价值和意义。
As an example, an experiment study of wind-wave spectrum in shallow water is compeleted to emphasize the superiority and importance of laboratory study.
最后,通过浅水波能谱试验,说明了推广与应用试验研究的价值和意义。
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