This paper takes a type gas turbine rotor as an example to analyze its natural frequency and modal shape.
介绍了某型燃气轮机转子模态试验，试验测得转子静态固有频率和模态振型。
In view of the locally severe vibration of a 125 motorcycle, the paper makes a structure modal analysis with ANSYS to get the natural frequency and the vibration mode of the frame.
针对某125摩托车局部振动比较严重，采用有限元分析软件ANSYS，对该款车架进行了结构模态分析，得到车架固有频率和振型。
The natural frequency and vibration mode are the principal modal parameters representing structure dynamic behavior as well as the important basis for evaluating bridge dynamic performance.
固有频率和振型是反映结构动力特性的主要模态参数，是评价桥梁动力性能的重要依据。
The practice application expresses that effective modal mass could be helpful to find natural frequency and vibration shape.
应用表明用有效模态质量进行模态识别，可以有助于找到尾轴架系统的固有频率和振型。
This paper analyzes the natural frequency and modal loss factor of stiffened plates with viscoelastic damping treatment by finite element method.
对敷设粘弹性阻尼的加筋板的固有频率和模态损耗因子进行了分析。
When the natural frequency is close to or far from harmonic frequencies, study the effect of the harmonic components in the identified modal parameters, and how to deal with harmonic modal.
本文研究了当某一阶固有频率与谐波频率接近或远离的情况下，谐波成分对识别的模态参数的影响，以及如何处理谐波模态。
By modal stiffness matrix, modal mass matrix and modal frequency, shaft units of simulator is designed. The former three steps natural characteristics are identical with the real units'.
依据设计原则，利用模态刚度矩阵、模态质量矩阵和模态频率相似进行了扭振模拟机轴系的设计，扭振模拟机轴系前三阶固有特性与实际机组轴系扭振动特性基本一致。
The result showed that the three methods could be used in the modal analysis of the above-mentioned structure, and its natural frequency could well be obtained.
结果表明，三种方法均可用于钢管混凝土框架结构模型模态分析，并能较好地得到结构固有频率。
Meanwhile, the modal analysis is used to test the detection arm's natural frequency and structural vibration modes, which provides a reference for the stability test of the bridge inspection vehicle.
同时对检测臂进行了模态分析，测出了其固有频率和结构振型，为检测车工作时的稳定性要求提供了参考。
Firstly, the modal analysis of the cabinet show that some natural frequencies are in the frequency range of loads, so the dynamic and fatigue performance of the electronic cabinet must be analyzed.
由模态分析得到新旧机柜都有一些固有频率在激励载荷的频率范围之内，故对新旧机柜开展动力学分析；
The study of static deformation, thermally induced distortion, dynamic response of natural frequency and modal pattern has been performed by using frozen fringe, realtime and time-average holography.
介绍了用冻结条纹法、实时全息法和时间平均法对静变形、热变形、固有频率和振型进行研究。
With the reduction of natural frequency stiffness and transformation of modal shape structure, the corresponding of the structure can also be changed.
刚度的减小自然伴随结构自然频率的减小和结构模态振型的转变，相应结构的动力响应也会出现转变。
According to the modal analysis, the natural frequency is not coincident to working frequency, so there would be no resonance occur during work.
由模态分析看出，筛箱固有频率和工作频率不重合，因此在工作中不会产生共振。
The natural frequency, modal shape and modal damping ratio of the typical structural of composite wallboard (rapid wall) system are got by dynamic behavior measurement.
通过实测复合墙板试点工程结构的动力反应，获得了结构的自振频率、振型和阻尼比等模态参数。
The vibration modal analysis method and the influent factors of the natural frequency of the rotating rotor of horizontal axis wind turbine rotor blades were presented.
建立了大型水平轴风轮转子／塔架耦合系统的气动弹性模型，推导了转子／塔架耦合系统周期系数运动方程，给出了气动弹性稳定性分析方法。
The vibration modal analysis method and the influent factors of the natural frequency of the rotating rotor of horizontal axis wind turbine rotor blades were presented.
建立了大型水平轴风轮转子／塔架耦合系统的气动弹性模型，推导了转子／塔架耦合系统周期系数运动方程，给出了气动弹性稳定性分析方法。
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