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。
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。
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