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位移模态
相关语句
  displacement mode
    STUDY ON DIRECT IDENTIFICATION OF DISPLACEMENT MODE AND STRAIN MODE BY IMPULSE EXCITATION
    用敲击法识别位移模态和应变模态
短句来源
    The displacement mode parameters and strain mode parameters are combined withneural networks techniques on the studies of damage detection of structures.
    利用结构位移模态试验和应变模态试验参数和神经网络方法对结构损伤定位和定量辨识问题进行了研究。
短句来源
    Most of structural damage identification is based on the results of displacement mode. The limitation of the results makes the identifying effects not well.
    目前结构损伤识别大多是基于位移模态的试验结果进行的 ,但由于位移模态结果的局限性 ,很多情况下识别效果并不明显。
短句来源
  “位移模态”译为未确定词的双语例句
    The chaotic motions of axial compressed nonlinear elastic beam subjected to transverse load were studied. Considering material and geometric nonlinearity, nonlinear partial differential equation of the system was derived. Under ideal displacement conditions,one order differential equations were devived and solved.
    研究了非线性弹性梁的混沌运动 ,梁受到轴向载荷的作用 ,计及材料非线性和几何非线性 ,建立了该动力系统的非线性偏微分方程 ,并在理想的位移模态条件下得出了一阶微分方程组 ,求解该动力系统后发现 ,当载荷 P0 和 f 满足一定条件时 ,系统将发生混沌运动 ,且混沌运动的区域呈现带状。
短句来源
    And furthermore, by studying the physicalmeanings of the matrix corresponding to the modes of vibration and force, and considering the physical of eigenfrequency itself, a new criterion is found to distinguish equal eigenfrequency and close eigenfrequency.
    进而通过研究对应于位移模态和外力的矩阵的物理性质,考虑到固有频率自身的物理性质,得到了区分重频和密频的新标准;
短句来源
    The theory and method of direct identification of displacement and strain modes for vibration modal test with strain guages are described. The concept of strain mobility, strain displacement relationships and derivation of formulae of transfer functions in terms of strains are considered.
    本文提出了在振动模态试验中用电阻应变片直接识别位移模态和应变模态的理论和方法,提出应变导纳概念,建立了应变和振动位移的关系,推导出在振动系统中用应变量表示的传递函数公式。
短句来源
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  displacement mode
The displacement mode of development is generated in a relatively short distance, and the fully developed displacement train concentrates sample components even from an elongated spot.
      
Compared with the displacement mode shape, the variations of strain mode shapes at each point are quite different.
      
The modal parameters considered are modal frequency, displacement mode shape (DMS) and strain mode shape (SMS).
      
We study a time-independent displacement mode which is an exact solution of Vlasov-Poisson equation for spherical stellar systems and we show that it corresponds to an aspherical mode.
      
The research with the ABx system indicated that these mixed mode interaction systems could be successfully employed in the displacement mode using DEAE-dextran as the displacer.
      
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The theory and method of direct identification of displacement and strain modes for vibration modal test with strain guages are described. The concept of strain mobility, strain displacement relationships and derivation of formulae of transfer functions in terms of strains are considered. The system modal

本文提出了在振动模态试验中用电阻应变片直接识别位移模态和应变模态的理论和方法,提出应变导纳概念,建立了应变和振动位移的关系,推导出在振动系统中用应变量表示的传递函数公式。用本方法可以识别出系统的模态参数(包括应变模态、应力模态)。

In this paper the problem was discussed in which the flextural rigidity and density of the Euler-Bernoulli Beam were solved from some of the displacement modes or the strain modes and the corresponding frequencies of a cantilever or a pinned-pinned beam. The necessary and sufficient conditions for the unique ex istence of a solution to the problem have been set up. An algorithm was proposed and numerical calculations were carried out. Examples and analysis both showed that much better results could be attained...

In this paper the problem was discussed in which the flextural rigidity and density of the Euler-Bernoulli Beam were solved from some of the displacement modes or the strain modes and the corresponding frequencies of a cantilever or a pinned-pinned beam. The necessary and sufficient conditions for the unique ex istence of a solution to the problem have been set up. An algorithm was proposed and numerical calculations were carried out. Examples and analysis both showed that much better results could be attained if the strain modes instead of the displacement modes were employed in the calculations. Although the investigations were made only on the cantilever and the pinned-pinned beam, the ideas in this paper worked equally well in the study of the mode inverse problem of beams subject to other boundary restraints.

本文以悬臂梁和两端铰支梁为例,讨论了由部分频率及相应的位移模态或应变模态确定Euler梁的截面物理参数这类问题,建立了解存在唯一的充要条件,提出了一种算法并做了算例,分析和计算都表明,求解这一问题用应变模态比用位移模态有利得多。

This paper presents the odd function with four terms which can be used to make the curve fitting of the stress-strain for various materials precisely.Furthermore,the displacement modes of elastic beams and the unknown coefficients are introduced to form the elasto-plastic displacement field.According to the principle of minimum potential energy,the unknown coefficients as well as the close solution can be determined.Several examples are taken to be investigated by using this method.Good agreement is obtained...

This paper presents the odd function with four terms which can be used to make the curve fitting of the stress-strain for various materials precisely.Furthermore,the displacement modes of elastic beams and the unknown coefficients are introduced to form the elasto-plastic displacement field.According to the principle of minimum potential energy,the unknown coefficients as well as the close solution can be determined.Several examples are taken to be investigated by using this method.Good agreement is obtained from the theoritical and experimental results.

在小弹塑性变形范围内,首先将应力写成应变的奇次四项式的幂函数形式。使其相当精确地拟合材料的拉伸曲线。然后,应用弹性梁的位移模态和一待定系数构成弹塑性位移场。并用最小势能原理确定该系数,从而得到封闭解。最后,给出若干典型算例和实验验证。实验结果和理论结果吻合得很好。

 
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