This is a common problem in performing any modal test.
这是一个进行任何模态测试时的普遍问题。
The goal of a modal test is to extract the accurate dynamic system characteristics.
模态试验的目的是要提取准确的系统动力学特性。
In this paper, a modal test method for quality evaluation of masonry structures is presented.
给出了一种砌体结构质量的振动模态检测方法。
So what would ever posses anyone to perform a modal test using an operating random excitation.
那么是什么让人想到要用工作随机激励来进行模态试验？
Recently the modal test of the large structure parts is one of the hot themes in the vibration domain.
对大型结构件做模态试验是近年来振动界的热门话题之一。
It can obtain mistuned frequency difference of blades by a modal test, and then get the mistuned parameters.
本文通过叶片模态试验获得叶片失谐频差，进而获得叶片失谐参数。
A good example of this brings to mind a recent modal test on a troublesome torsional vibration shaker system.
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。
With common modal test method of structure, a modal test is carried out in some locomotive car body steel structure.
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。
In vehicle emission modal test, sample line delay is an important element that can affect the test result very much.
在汽车排放模态测试中，采样管路的延迟时间是影响测试结果的重要因素。
Now when a modal test is performed, typically all of the measurements are acquired relative to a particular reference.
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 I hope you understand the problems associated with running an experimental modal test with an operating excitation.
我希望现在你理解了用工作激励进行试验模态测试相关的这个问题。
Study on technology for the experimental modal test and parameter identification of the light thin plate retaining wall.
轻型薄板式挡土墙试验模态测试与参数识别技术研究。
A brief overview and assessment on the supporting methods for the modal test of large-Sized launch Vehicle are presented.
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。
Based on the modal test results of truck cab, the finite element model for dynamic analysis of the truck cab was modified.
本文利用货车驾驶室的测试模态参数来修正其有限元动力分析模型。
Through building a 1:10 model of spring vibration isolated turbine-generator foundation, this paper study it by modal test.
本文通过设计制作1：10模型对汽轮机发电机组弹簧隔振基础进行试验研究。
Through model's modal test, the method of modal test for continuous arched bridge is proved reliable and can obtain satisfied results.
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；
Modal calculation of resonant bending system was made with the finite element method, and the results are validated by the modal test.
进一步进行了试验系统的有限元模态计算，并利用模态测试对有限元计算的有效性进行了验证。
Using the results of FE modal calculation, optimization of exciting and measuring positions have been carried out before the modal test.
本文利用有限元模态计算的结果，进行模态测试前的测点和激励点的优化研究。
In this paper, the vibration characteristics of frame foundation for steam turbine generator set is performed by model modal test method.
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.
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。
The tire modal test and its application to the tire structure design were analysed, and a tire modal analysing test system was established.
分析了轮胎模态分析的试验方法及其在轮胎设计中的应用，并建立了轮胎模态分析试验系统。
Modal test and parameter identification of a wind tunnel flutter model simulating a wing with external missiles are presented in this paper.
本文介绍了带外挂风洞颤振模型模态试验与参数识别方法。
Modal test and parameter identification of a wind tunnel flutter model, similar to a wing with external missiles, are presented in this paper.
本文介绍了带外挂风洞颤振模型模态试验与参数识别方法。
The genetic algorithms was adopted to optimize sensor placement and enhance completeness of the test data in the space grid structure modal test.
为解决空间网格结构模态测试中的传感器位置优化布置问题，提高采集数据信息的完备性，采用遗传算法优化传感器布置位置。
It is necessary and useful in engineering to modify a finite element model or some elements of mass and stiffness matrix by using modal test results.
利用试验模态分析结果，对有限元力学模型本身或其中某些参数进行修改是必要的和有工程意义的。
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.
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。
For large scale free structure with very great weight, such as a large and heavy-duty launch-vehicle, the free-free modal test is realized difficultly.
对于大型自由结构，如大型运载器，要实现自由状态下的模态试验是愈来愈困难了。为此，人们被迫只好对这类结构进行约束状态下的模态试验。
Vibration characteristic was calculated by using finite element transfer matrix method of multibody system and modal test was completed for a certain naval gun.
使用有限元传递矩阵法分析了某大长径比弹箭的固有振动特性，成功求得了其固有振动频率和振型函数，计算结果得到试验验证。
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.
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。
Finally, the FEA model of the airborne electronic box modified by the results of the modal test needs to be simulated to analyze its structural dynamic characteristics.
实验模态分析已应用于电子产品结构动力学特性方面的研究。
应用推荐