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.
模态分析用于确定设计中的结构及其部件的振动特性，包括结构的固有频率和振型。
Modal analysis is used to determine the vibration characteristic of a structure and its components, including the natural frequencies and vibration modes of the structure.
通过对白车身的模态分析，获得了车身结构固有的振动特性，并找出了车身结构在动态激励时的薄弱环节。
By the results of modal analysis of the body in-white, the body's natural dynamic features are got in the paper, and located some weakness of the structure.
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.
故对车架结构进行固有特性的模态分析是具有实际意义的工作。
Therefore, the inherent characteristics of the frame structure of the modal analysis is meaningful work.
当壳体的经线有折角时，我们采用模态综合法分析它的固有振动特性。
If there exists a discontinuity in the meridian for a rotational shell, we use the modal synthesis method to analyse the free vibration of this kind of shell.
当壳体的经线有折角时，我们采用模态综合法分析它的固有振动特性。
If there exists a discontinuity in the meridian for a rotational shell, we use the modal synthesis method to analyse the free vibration of this kind of shell.
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