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。
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。
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。
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。
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。
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。
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.
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。
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.
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 composition and configuration of hardware and software for the multipoint excitation system and theoretical base and basic calculation of modal test technique are discussed.
综合论述了多点激振系统的硬件、软件的组成与配置，以及模态试验技术的理论依据和基本算法。
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.
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 machine modes were tested by LMS modal test system. The correlation between the experimental modes and the simulation modes was analyzed and the simulation model was modified.
应用LMS模态测试系统对整机进行了模态测试，对试验模态与仿真模态进行相关性分析并修正仿真模型。
Modal test and analysis of X-2 missile are discussed here in detail. Some test results are given Finally, the application of modal test and analysis in missile design is introduced.
本文详细叙述了X - 2导弹的模态试验及分析，给出了有关的试验结果，并对模态试验分析在导弹设计中的应用作了介绍。
Based on the piers mode shape function, this paper studied the methodology of structure ductility coefficient by modal test and the procedure of the structures inelastic seismic force.
以桥墩的基本振型函数为基础，推导出基于试验动力参数的在役桥梁结构延性系数的计算公式，并给出了结构非弹性地震力的求解方法。
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.
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 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.
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。
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。
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