试验模态分析是了解结构动特性的重要工具。
Test modal analysis is an important means for understanding dynamic characteristics of construction.
本文用试验模态分析技术研究了螺桨桨叶振动特性。
The vibration characteristics of propeller blades have been investigated by using experimental modal analysis technique.
利用脉冲激励法对轴结构件损伤状况进行了试验模态分析。
A test modal analysis of the damage about the shaft structure components is analyzed by the pulse-excitation method.
本文利用M序列的随机信号进行了机床运转状态下试验模态分析的探索。
This paper explores the experimental modal analysis of machine tool structures with rotating spindle. the excitation signal is the pseudo-random binary M series.
本文主要论述试验模态分析技术在建筑结构模型动态参数识别中的应用。
In this paper, the application of model parameters identification in dynamic tests of structural model are discussed and the associated theory and data analysis methods are also presented.
在试验模态分析基础上，对比分析模态参数，验证有限元模型的有效性。
Based on the experimental modal analysis, compare the modal parameters to verify the validity of finite element model.
试验模态分析是识别机械结构系统固有特性的一种常用、有效的现代技术。
The test modal analysis is an effective means to identify the intrinsic attribute of a mechanical structure.
试验模态分析中，要获得完整的模态振型，需要在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.
本文根据试验模态分析技术，对x 8132万能工具铣床的动态特性进行了研究。
This paper deals with the dynamic characteristics of the X8132 universal milling machine based on the experimental model analysis technology.
应用试验模态分析技术对ZS1105直喷式柴油机机体的动态特性进行了分析、研究。
This paper analyse the dynamic characteristics of cylinder block of type ZS1105 D. I. diesel engine applying test mode analysis technique.
通过理论计算及试验模态分析，研究了磁悬浮阻尼器参数对系统弯曲模态阻尼比的影响。
Influence of the magnetic damper on bending modal damping of the system is studied by theoretical and experimental modal analysis.
试验模态分析的历史始于1940年，用于测量飞机的模态参数，以准确预测颤振问题。
The history of experimental modal analysis began in the 1940's with work oriented toward measuring the modal parameters of aircraft so that the problem of flutter could be accurately predicted.
采用试验模态分析和工作变形分析方法，探讨了摩托车整车振动问题的分析和解决思路。
The test modal analysis and the analysis of deformation due to operation are the ways the author takes in doing the job.
采用试验模态分析和理论模态分析相结合的方法，研究了齿轮系统的固有特性和动力响应。
The nature frequency, normal mode and dynamic response of gear system are studied by theoretical modal analysis method combined with experimental modal analysis method.
在试验模态分析中分量法及矢量法是非常简便实用的，但在处理密模态结构时会出现问题。
The quadrature and Vector methods are very simple and efficient in experimental modal analysis. The difficulties will be met in the consideration of structures with close-modes.
试验模态分析与有限元计算相结合的研究方法是一种实用、可靠的结构动态分析的现代方法。
Dynamic analysis of structure through combining the finite element method with the experimental mode is a practical reliable and effective modern method.
在最简单的情况下，这些阶段可以非常简短，但试验模态分析基于对每个阶段基础内容的理解。
While these phases can be, in the simplest cases, very abbreviated, experimental modal analysis depends upon the understanding of the basis for each phase.
用试验模态分析方法测取的系统前1阶模态参数，由于噪声等多种因素的影响，具有一定误差。
There must be errors for the measuring values of the first 1 order data of a system due to the noise and other factors in the Testing Model Analysis.
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。
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.
用试验模态分析结果、模态综合技术、瑞利法相结合的办法，提高了试验模态分析所得振型的精度。
A method of mode correction is suggested to improve the accuracy of the experimental mode based on the results of experimental modal analysis, modal synthesis technique and Rayleigh's method.
针对一台铝合金车体的轻轨样车，进行了试验模态分析，通过试验说明了该样车具有良好的动态特性。
Taking a prototype light rail car with aluminum alloy car-body for example, the test model analysis is carried out. The test results show that the prototype car has good dynamic characteristics.
其次对一摩托车架进行了试验模态分析，试验表明仪器能较好地分析出车架的多阶模态，并显示出其模态振型。
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.
到目前为止，对大多数人来讲，模态参数估计（通常称为曲线拟合）可能是试验模态分析中最难以理解的部分。
Modal parameter estimation (commonly referred to as curvefitting) is probably, by far, the hardest part of experimental modal analysis for most people to understand.
并与该车架的试验模态分析结果进行比较，认为建立的模型满足设计要求，为后续车架结构优化改进工作奠定了基础。
The calculation results are compared with those from the experiments and the model proves effective and provides basis for optimization of later design.
通过对比浮钳式盘式制动器各零部件的有限元模态分析和试验模态分析所得出的模态阵型，验证了有限元模型的正确性。
Through the comparison of modal shape of floating caliper brake system elements by finite element modal analysis and experiment modal analysis, the validity of finite element model is confirmed.
采用动态应变测试和试验模态分析法对QTZ80型塔式起重机进行振动测试和分析，并通过实验结论验证其理论分析的正确性。
Vibration measurement and analysis of QTZ80 tower crane is conducted through dynamic strain test and experimental mode analysis. The correctness of theoretical analysis has been proved by the results.
仪器为对中小型结构的试验模态分析提供了单模态参数识别与多模态参数识别等多种参数拟合方法，并预留了增加新的拟合分析算法的接口。
The systemoffers different methods of parameter identifications for structures test including simple mode and multiple modes, and retains the interface of adding new smooth algorithms.
我希望这有助于解释锤击试验时的某些重要的关心事项。如果你有关于模态分析的任何其他问题，尽管问我好了。
I hope this helps to explain some of the more important concerns when impact testing. If you have any other questions about modal analysis, just ask me.
从理论和试验两个方面分析和研究噪声对识别精度的影响，影响识别精度的因素，以及部分模态成分的模态参数不能够被识别的原因。
The influence of noise on identification precision, the effect factor of the computing precision and the reason of missing estimation some modes were analyzed and discussed.
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.
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