• 支撑弹簧非常时,梁的模态看起来非常刚体

    When the springs supporting the beam are very soft, then the mode shape for the beam looks very much like a rigid body.

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  • 通过计算得到固有频率分析了低阶固有态振

    Ten orders 'natural frequencies had been calculated and low-order vibration shape of the body structure was studied.

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  • 曲率模态振型可以有效地确定结构早期损伤存在程度位置

    Curvature mode shape can indicate the presence of initial damage and its severity, and locate initial damage of a structure effectively.

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  • 我们很快可以发现某些模态振型信息结构外部极大地支配

    We can quickly see that some of the mode shape information is strongly controlled by the exterior of the structure.

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  • 研究适用桥梁连续梁结构基于曲率模态损伤识别方法

    A damage identification approach applied aptly in Bridges and continuous beams, based on the curvature mode shapes, was studied in this paper.

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  • 开发程序可以计算转子各阶模态振型临界转速,进行稳定性分析

    The program can calculate modal shapes and critical speeds, analyze the stability of the rotor system.

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  • 唯一要求相对来说,模态振型应该具有显著数值

    The only requirement is that the mode shape should have a significant value in relation to its mode shape;

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  • 分别计算出了谐调谐情况模态计算结果进行分析讨论。

    The mode shapes of the tuned and the mistuned are calculated and the results are analysed.

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  • 介绍燃气轮机转子试验,试验测得转子固有频率模态振型

    This paper takes a type gas turbine rotor as an example to analyze its natural frequency and modal shape.

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  • 理解态振受激结构如何将有助于设计工程师设计出更优的结构。

    Understanding the mode shape and how the structure will vibrate when excited helps the design engineer to design better structures.

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  • 试验分析,要获得完整模态振型需要所有自由度方向都进行测量

    In experimental modal analysis, it is necessary to measure the response data in directions of all degrees of freedom to obtain the complete mode shape information.

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  • 我们一个简单结构开始这个讨论这个结构实际上具有确定方向振型

    Let's start this discussion with a simple structure that has mode shapes that are very directional in nature.

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  • 提出了利用频率模态振型模态度组合指标作为神经网络修正输入参数

    And we suggest that mode frequencies, mode shapes and mode flexibility are regarded as input parameters of neural network modification.

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  • 提出了利用频率模态振型模态柔度组合指标作为神经网络修正输入参数

    The mode flexibility and the mode frequency were introduced to the input parameter of neural network system.

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  • 并用方法测量线性陀螺固有频率品质因子、—阶态振型杨氏量。

    The natural frequency, quality factor, first mode of fold beam and Young's modulus of the double linear vibratory gyroscope were measured by the new setup.

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  • 图示中,我们现在可以看出足够数量描述每一模态

    Now from the mode shapes shown we can see that there are sufficient number of points to describe the mode shape for each mode. But there are a total of 45 measurement locations on this plate.

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  • 大致说来简单回答需要测量足够这样你就可以唯一地描述模态振型了。

    Basically the simplest answer is that you need to measure a sufficient number of points so that you can uniquely describe the mode shape.

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  • 从根本上讲这些特性依赖结构质量刚度决定固有频率模态振型何处存在

    Basically, there are characteristics that depend on the weight and stiffness of my structure which determine where these natural frequencies and mode shapes will exist.

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  • 建立曲轴连杆组合结构,进行有限元计算得出曲轴连杆组合结构固有频率态振型

    Calculate the finite element mode of the complex combined structures in the load case and get the result of the theory calculation.

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  • 本讲义重点说明函数(FRF)测量结果如何与结构模态振型频率建立联系的。

    The major point of the text is to show how frequency responsefunction (FRF) measurements are related to the structure's mode shapes and vibrational frequencies.

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  • 刚度减小自然伴随结构自然频率减小结构态振型转变相应结构的动力响应也会出现转变

    With the reduction of natural frequency stiffness and transformation of modal shape structure, the corresponding of the structure can also be changed.

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  • 固有频率阻尼模态振型最大位移破坏财产系统进行计算分析基础试验

    The natural frequency, damping ratio, mode shapes, maximum displacement and failure property of the system were calculated and analyzed based on shaking table test.

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  • 采用有限元分析滚珠轴承磁浮轴承—转子系统获得相应线性系统固有频率态振型等动特征量。

    Using the finite element methods to study the natural and linear bearing EMBR system, the inherent frequencies and modes are obtained.

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  • 通过试验可以计算出结构的固有频率模态阻尼比等参数结构设计优化打下坚实的基础。

    Eigenfrequency, vibration pattern and damping ratio can be got by modal experiment. Then, these parameters can be used to structural design and optimization.

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  • 结果表明采用该方法能够有效地识别态振型,从而弥补了复指数法在未知激励进行模态分析的不足。

    The results show that the present method can identify the mode shape accurately and complement the use of PRCE under unknown exci…

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  • 结果表明采用方法能够有效地识别从而弥补复指数法在未知激励进行模态分析的不足。

    The results show that the present method can identify the mode shape accurately and complement the use of PRCE under unknown excitation condition.

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  • 其次摩托车进行了试验分析试验表明仪器较好地分析出车架显示出模态

    The second test aims to a motor frame, we can conclude from the experiment that the instrument can analyze multiple modes of complex structure and display its modal vibration shapes.

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  • 本文基于态振提出一个新的用于结构损伤识别参数——振型曲率将之作为神经网络输入向量

    In this paper, based on mode shape, the author put forward a new parameter-mode shape curvature ratio for detecting structure damages. And it is also the input vector of the neural network.

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  • 本文基于态振提出一个新的用于结构损伤识别参数——振型曲率将之作为神经网络输入向量

    In this paper, based on mode shape, the author put forward a new parameter-mode shape curvature ratio for detecting structure damages. And it is also the input vector of the neural network.

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