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固有频率     
相关语句
  natural frequency
    Approximate Calculation Methocls for Natural Frequency of an Elliptic Column Oscillating on a Horizontal plane
    椭圆柱体在平面上摆动固有频率的近似计算方法
短句来源
    ON ERROR TREND PROBLEM OF NATURAL FREQUENCY CALCULATED BY RITZ METHOD AND FINITE ELEMENT METHOD
    里兹法以及有限元法计算固有频率的误差趋势问题
短句来源
    Solution to Natural Frequency of Longitudinal Vibration for a Nonuniform Nonhomogeneous Bar with Variable Cross Section by Finite Segments Method
    有限段法解非均质变截面杆纵向振动固有频率
短句来源
    Natural Frequency of Heated Annular Plates With Variable Thickness
    加热变厚度环板的固有频率
短句来源
    FUNCTION APPROACHING SOLUTION OF FINDING NATURAL FREQUENCY OF STRUCTURE BY DYNAMIC SUBSTRUCTURE METHOD
    用动态子结构法求结构固有频率的函数逼近解
短句来源
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  natural frequencies
    Calculating the Natural Frequencies of Elastic thin Plates of Variablethickness by Finite Strip-Riccati Transfer Substructure Method
    变厚度弹性薄板固有频率计算的有限条-Riccati迁移子结构法
短句来源
    Modifying Structural Natural Frequencies Using the Second Order Sensitivity
    应用二阶灵敏度修改结构固有频率
短句来源
    Interval Perturbation Method for Computing Regions Containing Complex Natural Frequencies of Structures
    结构复固有频率区域的区间摄动法
短句来源
    NATURAL FREQUENCIES OF INITIALLY STRESSED ARCHES IN LATERAL VIBRATION
    初应力拱侧向振动的固有频率
短句来源
    HAMILTON CANONICAL EQUATION FOR ELASTIC BODIES AND NATURAL FREQUENCIES ANALYSIS OF INTEGRAL STIFFENED PLATES
    弹性体的正则方程和加筋板的固有频率分析
短句来源
更多       
  intrinsic frequency
    Study results show that:the driving system could be simplified to a 1 freedom,damped,2 degree oscillating system,and its intrinsic frequency f n =84±1.3 Hz,damp ratio ξ =0.5±0.023;
    结果表明:驱动系统可以简化为一个单自由度有阻尼的二阶振动系统,其固有频率和阻尼比分别为:fn=84±1.3Hz,ξ=0.05±0.023;
短句来源
    DETERMINING INTRINSIC FREQUENCY OF A BEAKER WITH LISSAJOUS’ FIGURE
    用利萨如图形测定烧杯的固有频率——介绍《物理现象探索》选修课的一个选题
短句来源
    (2) The detuning of the intrinsic frequency of tubes, the number of tubes in the calculation, axial-flow and the curvature of U-tubes, which influence on the critical velocity of tube arrays, are studied carefully.
    (2). 考虑了固有频率改变、计算时管数取值、纵向流存在以及U形管弯曲部分对流体弹性不稳定性的影响;
短句来源
  resonant frequency
    In the analysis resonant frequency,modal loss factor and harmonic response of structures are studied.
    在分析中分别针对结构的固有频率、模态损耗因子以及简谐响应进行了研究。
短句来源
    The purpose of this article is to clarify the various characteristic frequencies of a linear single degree of freedom mass spring system with viaoous damping. The frequencies are: undamped frequency ω0 ( resonant frequency, phase resonant frequency, velocity amplitude resonant frequency ) , natural frequency ωn, ( displacement ) amplitude resonant frequency Ωad and acceleration amplitude resonant frequency Ωaa.
    本文目的在于辨明单自由度粘性阻尼线性系统的各种特性频率:固有频率w_0(共振频率,相位共振频率,速度振幅共振频率),自然频率w_n,(位移)振幅共损频率Ω_(ad),和加速度振幅共振频率Ω_(aa)。
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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.
      
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  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.
      
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  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.
      
更多          
  nature frequency
The local-ether wave equation incorporating a nature frequency and the electric scalar potential is presented, from which the electrostatic force in conjunction with the inertial mass is derived.
      
It is found that, with the flow velocity increased, the nature frequency of the pipes reduced, increased, reduced again and so on.
      
Meanwhile the third-order approximate analytic expression is given for describing the nonlinear relation between nature frequency and peripheral moment, transverse loads, amplitude, base angle under the small deformation.
      
Changing from case 1 to case 2, the overall bridge system becomes softer which makes the nature frequency smaller.
      
For example, if a structure is damaged locally, its stiffness will decrease which lead to nature frequency decrease and damping increase.
      
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