模态试验的目的是要提取准确的系统动力学特性。
The goal of a modal test is to extract the accurate dynamic system characteristics.
那么当进行模态试验时，通常情况下是相对于一个特定的参考点采集所有的测量结果。
Now when a modal test is performed, typically all of the measurements are acquired relative to a particular reference.
针对某轿车开发过程中的地板振动问题，通过道路试验和模态试验，发现排气管的振动对地板振动影响很大，是地板振动的主要原因。
In this paper, focus on vibrating problem of floor during one sedan development, the author finds out the reason lies to exhaust pipe system by road test and modal test.
现在大多数时候，人们在试验中不测量刚体模态，并且在模态试验过程中，他们不包含刚体模态作为测量的弹性体模态的组成部分。
Now most times people don't measure the rigid body modes in test and they don't include them as part of the flexible modes measured during a modal test.
这是一个用激振器激励进行模态试验时经常会遇到的问题。
It's one that comes up often in terms of running modal tests with a shaker excitation.
大多数试验情况下，成功进行模态试验依赖于对试验情况有非常明确的目标。
As in most experimental situations, the success of the experimental modal analysis process depends upon having very specific goals for the test situation.
这个很好的例子使我想起了近期的一次模态试验，试验是在一个棘手的扭转振动台系统上进行的。
A good example of this brings to mind a recent modal test on a troublesome torsional vibration shaker system.
在通过模态试验、振动试验等验证后，该承力筒成功地应用于某卫星上。
After the model and vibrate test, the cylinder was used in the satellite successfully.
误差分析表明，如果模态试验结果具有足够的精度，用本文方法能够准确地实现结构边界支承刚度识别。
The error analysis proves that this method can realize the exact identification of the structure boundary support stiffness if the modal test results are of enough accuracy.
那么是什么让人想到要用工作随机激励来进行模态试验？
So what would ever posses anyone to perform a modal test using an operating random excitation.
通过与模态试验结果的比较可以发现，采用有限元法分析动叶片的振动特性是可靠和有效的。
We can find it is reliable and effective to use FEA to analyze the vibration characters of moving blades by comparing with the results of modal experiment.
采用模型模态试验方法对汽轮发电机组框架式基础的振动特性进行了研究。
In this paper, the vibration characteristics of frame foundation for steam turbine generator set is performed by model modal test method.
首次将模态试验分析和动力修改技术引进到大圆筒码头。
Techniques of modal tests and dynamic modification are applied to the analysis of large cylindrical wharf structures.
该系统对激光印字机进行模态试验获得了满意效果。
The system has been applied satisfactorily to the modal testing for LaserJet printer.
采用模型模态试验方法对汽轮发电机组框架式基础的振动特性进行了研究。
In this paper, the vibration characteristics of frame foundation for steam turbine-generator set are performed by model modal test method.
通过模态试验和振动台试验，对复合材料蜂窝结构锥形壳的振动传递特性进行了研究。
The vibration transmissibility of the conical shell with composite material honeycomb structure is investigated by modal experiment and vibration table experiment.
模态试验和仿真计算的对比分析结果表明，所建立的白车身有限元模型较好地反映了原结构的振动特性。
The contrastive analysis of modal test and simulation computation show that the finite element model of body-in-white has well represented the vibration characteristics of the original structure.
本文对大型运载器模态试验采用的支承方法作了简要综述与评价。
A brief overview and assessment on the supporting methods for the modal test of large-Sized launch Vehicle are presented.
文章主要介绍了一种比较常用的模态试验方法和某型电力机车车体钢结构模态试验。
With common modal test method of structure, a modal test is carried out in some locomotive car body steel structure.
方法利用单输入单输出（SISO）模态试验方法和数值模拟方法，对一榀钢管混凝土柱-H钢梁框架结构模型的动力特性进行测试分析。
The Single Input and Single Output(SISO)modal experiment and numerical simulation was used to study the dynamic behavior of a CFST column-H steel beam frame structure model.
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。
This paper takes a type gas turbine rotor as an example to analyze its natural frequency and modal shape.
通过对模型的模态试验，证明对连拱结构，模态试验的方法是可靠的，能够取得较好的效果；
Through model's modal test, the method of modal test for continuous arched bridge is proved reliable and can obtain satisfied results.
研究了汽车工况法排放测试的模态试验方法及分析方法。
Modal measurement and analysis method of vehicle emission test were discussed.
模态试验边界转换的问题，始终是航空航天界关心的课题之一。
For the problem of the mode test boundary transformation, it has been one of the topics concerned in aviation and spaceflight field all the time.
本文围绕结构损伤诊断，研究基于环境激励的模态试验方法、传感器优化布置原理和小波包能量谱损伤预警方法三方面的内容。
Enclosing damage diagnosis, this pape studies modal experiment in ambient excitation, optimal placement of sensors and structural damage alarming using wavelet packet energy spectrum.
通过与车架模态试验结果对比，验证了模型和建模方法的准确性，对IVECO新车型的虚拟开发具有重要意义。
The accuracy of model and its method is verified by modal test. The construction and analysis of the frame model is very important to the virtual development of the new IVECO car.
针对位移模态参数对结构损伤欠敏感，应用应变模态试验技术诊断结构损伤位置和程度。
Strain modal test is applied to diagnosing the position and degree of structural damage, in consideration of the displacement modal parameters being insensitive to damage.
在模态试验的基础上，用模态综合及复模态方法分析了汽车制动时鼓式制动器的尖叫特性。
On the basis of modaling experiments, the squealing characteristic of drum brake, when motor vehicle is being braked, is studied by applying modal synthesis and complex modaling methods.
文中较详细地介绍了复杂结构模型修改新技术、虚拟模态试验技术和振动台虚拟振动试验技术。
The new techniques are described in detail, including the mathematical model updating for complex structures, the virtual modal test techniques and the virtual vibration test techniques of shaker.
采用有限元方法与模态试验技术，分析了燃油分配管总成的频率特性。
In this paper, the FEM and the experimental modal analysis techniques are employed to analyze the frequency response of the Fuel Rail Assembly. A simplification method is introduced.
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