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固有频率     
相关语句
  natural frequency
    The Relationship Between the Natural Frequency of the Transverse Vibration of the Pile with Free Length and the Coefficient of Subgrade Reaction
    有自由长度桩横向振动的固有频率与地基抗力系数的关系
短句来源
    Natural Frequency Analysis of Rotating Timoshemko Beam
    转动Timoshenko梁的固有频率分析
短句来源
    Natural Frequency of the Variable Section Determined Using Minimum Excess Principle
    应用最小余能原理确定变截面杆的固有频率(Ⅰ)——棱柱形悬臂杆
短句来源
    Analysis of analytical sensitivity in natural frequency for structures consisted of truss beam plate
    杆梁板组合结构固有频率灵敏度分析解析法
短句来源
    On Natural Frequency of Varying Thickness Rectangular Plate with Four Free Edges on Winkler Elastic Foundation by the Method of Galerkin
    Winkler地基上变厚度自由矩形板固有频率的Galerkin解法
短句来源
更多       
  inherent frequency
    Because structure inherent frequency affects vibration strength, frequency domain analysis results show that power signal density(PST) curve has two high peak during the frequency of 0.38~0.41HZ.
    频域动强度分析结果显示,功率谱响应在0.37~041HZ之间有两个比较大的峰值,这是系统固有频率影响的结果。
短句来源
    In this paper, a study on finite element dynamic model optimization is conducted on the basis of taking the inherent frequency of the aircraft structure measured from the vi-bration experiments as the larger.
    本文研究以振动试验测得的飞机结构的固有频率为目标值的有限元动力模型的优化问题。
短句来源
    A Simplified Evaluation Method for Inherent Frequency and Prediction
    矩形截面组合梁横向振动固有频率分析
短句来源
    So, there are two means to solve the problem that vibration stress is too big. One is to lower the dynamic load's peak, the other is to adjust off working frequency and inherent frequency.
    因此,可以从减小油缸冲击载荷的峰值和调开油缸工作频率与泵车固有频率两个角度解决动应力较大的问题。
短句来源
    The first work of the second part in this paper was to deduce the dynamic equation of cable-net problem, than inferred the eigenvalue equation for narrow range vibration of cable-net by using BEM , Finally the dynamic problem for cable-net was resolved precisely , because the solution of the cable-net's inherent frequency also was found by using BEM.
    本文第二部分,首先推得索网问题的动力方程,然后用边界元素方法推得索网微幅振动的特征值方程,用边界元素法求解索网的固有频率,使索网动力特征问题得以较精确的解决。
短句来源
更多       
  natural frequencies
    Iteration Method for Finding the Damped Natural Frequencies of Foundation Vibration
    基础阻尼振动固有频率迭代求解
短句来源
    The Iteration Method with Convergent Factor for the Natural Frequencies and Modes of Vibration
    收敛因子法迭代求振动固有频率和振型
短句来源
    The natural frequencies of beam are calculated with finite element method in the cases of different crack width and different crack depth.
    本文利用有限元法分别计算在不同的裂纹深度、不同的裂纹开口宽度的情况下梁的固有频率
短句来源
    Two natural frequencies of concrete cantilever beam in different situations are simulated with the finite element program developed by Matlab.
    为此,利用Matlab软件编制了混凝土梁的有限元振动计算程序,对混凝土悬臂梁在发生损伤前后的两种固有频率特征量进行了仿真计算.
短句来源
    The dynamic stiffness of the foundations is essentially dependent on their natural frequencies.
    基础动刚度主要与基础的固有频率有关。 在频率15~70Hz内,固定基础和弹性基础都存在多个固有频率
短句来源
更多       
  intrinsic frequency
    Influence of corrugation on intrinsic frequency and critical load of arched-metal roof
    波纹对拱型屋面临界载荷和固有频率影响
短句来源
    The characteristics of the intrinsic frequency distribution of the framed steam turbine-generator set foundation are summarized;
    论文最后总结了框架式汽轮发电机组基础固有频率的分布特点;
短句来源
    In order to prevent meshing vibration frequency of gearfrom closing to intrinsic frequency which would make situation of gearworse ,dynamic optional design on planetary drive was made .
    为了防止轮齿的啮合激振频率靠近齿轮的固有频率而使齿轮的工作条件更加恶化,对齿轮系统进行了动态优化设计。
短句来源
    Hilbert-Huang Transform (HHT) is applied to the damage identification and intrinsic frequency confirmation of time-variable structures. Furthermore, a kind of inverse calculation is presented to calculate structural stiffness. This method can solve three main problems: the time that damage occurred, the location and the degree of damage.
    本文简要总结了结构损伤识别领域的研究现状和趋势,围绕损伤引起固有频率变化这个特征,将希尔伯特—黄变换(HHT)应用于时变结构的损伤识别和损伤前后固有频率确定上,并结合牛顿迭代法,对结构刚度进行反演计算,从而解决结构损伤识别领域所关注的三个主要问题:损伤发生时间、损伤位置以及损伤的程度。
短句来源
    During the low strain dynamic test of the foundation pile, the adoption of the velocity sensor to the direct measurement of the relative displacement of the pile head is helpful to reducing the improper dependence upon the measured intrinsic frequency valuesof the pile soil system in calculating vertical bearing capacity of the single pile, and is hence conducive to raising the accuracy of the calculated vertical bearing capacity of the single pile.
    基桩低应变动测中 ,采用速度传感器直接测出桩头的相对位移 ,在推算单桩竖向承载力时 ,有助于降低对桩土体系固有频率测定值的过分依赖 ,从而有利于提高单桩竖向承载力推算值的准确程度
短句来源

 

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  natural frequency
This study investigated the dynamic modulus of elasticity (DMOE) of wood panels of Fraxinus mandshurica, Pinus koraiensis, and Juglans mandshurica using the natural frequency measurement system of fast Fourier transform (FFT).
      
The natural frequency reached 1.201-kHz using finite element analysis, and the practice measurement result was 1-kHz.
      
Using the differentials of a stiffness matrix to design parameters, a method for calculating the sensitivity of natural frequency is presented.
      
Through the mode analysis of the liquid-solid coupled system, the first-order natural frequency, diaphragm vibration shape and amplitude-frequency relationship are obtained.
      
The natural frequency of the system was less than that of the structure on rigid foundation if the SSI is not taken into account, while its damping ratio was larger than that of the structure.
      
更多          
  inherent frequency
Code combining is used to exploit the multiple signal copies resulting from the inherent frequency diversity of spread spectrum.
      
Even though the gain due to selection in frequency selective channels is reduced compared to that in flat fading channels due to the inherent frequency diversity, the performance improvement is significant when the system is interference limited.
      
Each device operates at some inherent frequency, with wide variation among devices.
      
The windowing helps by reducing the inherent frequency broadening of each interferer caused by the finite duration of the FFT.
      
  natural frequencies
The forward problem is to solve the natural frequencies through a cracked structural model and the inverse problem is to quantitatively determine the crack parameters using the experimental testing frequencies.
      
Contour plots of normalized crack location versus normalized crack size were plotted by using the first three natural frequencies as the inputs.
      
The estimations of natural frequencies and damping coefficients of the platform found as a result of data processing of microacceleration measurements made during its free oscillations are obtained.
      
Determining the natural frequencies of fluid oscillations in complex pipelines
      
Below we formulate the problem of the natural frequencies of small oscillations of a liquid for the general case of an equilibrium liquid surface in a weak potential mass force field.
      
更多          
  intrinsic frequency
On this assumption, deviations of the Zeitgeber-frequency from the intrinsic frequency of the dependent systems cause phase-angle differences between the two systems.
      
Also, with short and relatively weak intersegmental connections, the network remains robust against perturbations as well as intrinsic frequency differences along the chain.
      
The temporal variation of the tidal component of the wind changes the observed frequency, sometimes substantially, while leaving the intrinsic frequency unaltered.
      
The intrinsic frequency and vertical and horizontal wavelengths of gravity waves in the stratosphere are 2f-3f, where f is the Coriolis parameter, and 2-3?km and 300-500?km, respectively.
      
Numerical evidence is given here that the family of such orbits is a continuous function of the rotation frequency Ω which varies between Ω?=?0, for the planar figure eight orbit with intrinsic frequency ω, and Ω =?ω for the circular Lagrange orbit.
      
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