An engine casing modal experiment and modal parameters extraction have been introduced in the paper.
用模态实验的方法对某型飞机发动机机匣的模态参数进行了识别。
Finally, the optimal placement scheme of sensors was presented according to a real arch modal experiment.
最后结合拱结构模态试验，提出了传感器优化布置方案。
It is found that the ED method has certain rationality in the arch modal experiment, but its randomness is bigger.
结果表明，在拱结构模态试验中，ED法具有一定的合理性，但其随机性较大。
Using solid rocket as gas generator, the sea level static ejector modal experiment was conducted successfully, and relevant data was obtained.
以固体火箭发动机作为燃气发生器，成功的进行了静态海平面零马赫状态下引射模态实验，获得了相关实验数据。
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.
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。
Eigenfrequency, vibration pattern and damping ratio can be got by modal experiment. Then, these parameters can be used to structural design and optimization.
通过模态试验，可以计算出结构的固有频率、模态振型、阻尼比等参数，为结构设计与优化打下坚实的基础。
The vibration transmissibility of the conical shell with composite material honeycomb structure is investigated by modal experiment and vibration table experiment.
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 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.
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。
Enclosing damage diagnosis, this pape studies modal experiment in ambient excitation, optimal placement of sensors and structural damage alarming using wavelet packet energy spectrum.
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。
The modal experiment analysis on vibration mechanism will be completed by INV306 intellectualized signal collection and process analysis system for validating the finite element analysis model.
利用INV306型智能信号采集和处理分析系统对振动机构进行模态验证试验分析，以确定仿真模型和分析数据的正确性。
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.
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。
In this paper, an efficient method for bridge damage detection is developed based on experiment modal analysis.
实验模态分析技术应用于桥梁损伤检测是有效可行的方法。
We picked the characteristic curve of the usual fault modal by the experiment and applied a BP network in fault diagnosis. And then we completed the fault diagnosis and modal identification.
通过实验提取一些常见故障模式的特性曲线，运用BP神经网络，实现了电液伺服阀的故障诊断和模式识别。
Based on the wavelet transformation and the theory of modal acoustic emission, the dispersion of guided wave propagated in thin plate was investigated by acoustic emission experiment.
基于小波变换和模态声发射理论，通过模态声发射试验的方法确定了管道中导波传播的频散特性。
This experiment method has some reference value on testing the 3-dimension modal shapes of a structure by using a single scanning laser vibrometer.
该实验方法对于采用单头激光测振仪测试结构的三维整体模态具有一定的参考价值。
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.
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。
Through lateral exciting experiment the lateral modal parameters of a tire are extracted and the cornering properties of the tire under different loading conditions are calculated.
通过侧向激振试验提取了轮胎的侧向模态参数并计算了轮胎在不同载荷下的偏离特性，计算结果与以往轮胎的试验结果具有很好的一致性。
The experiment indicates that the improved algorithm can solve more complicated multi-variant and multi-modal problems.
实验结果表明改进后的算法能解决较为复杂的高维多峰值问题，找到的解更接近最优解。
Meanwhile, according to the theory derivation result, this paper describes the basic process and operating method of analyzing the fan modal parameters through experiment.
同时依据理论推导结果，介绍了通过实验分析风机模态参数的基本流程和操作方法。
Experiment results demonstrated that we made a good prediction through the modal.
通过实例计算和分析，结果表明该预测方法具有较好的预测效果。
Experiment results demonstrated that we made a good prediction through the modal.
通过实例计算和分析，结果表明该预测方法具有较好的预测效果。
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