THE COMPARISON OF MODAL ANALYSIS BY TWO DIFFERENT EXPERIMENTAL APPROACHES

机译：两种不同实验方法进行模态分析的比较

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This paper presents the comparison of tworndifferent methods in the system identification. Thernexperimental modal analysis and operational modal analysisrnare applied to a local structure of a storage/retrieval machinern(S/R machine). The different vibration measurementrnapproach and different theoretic analysis approach give usrnmore information than only one approach. Through the result,rnthe consistence of two approaches is found, and thernvibrating integrality that is obtained from measurement underrnnormal operating condition is better than that is obtainedrnfrom measurement during exciting the structure by arnhammer. From the system frequency response functions thatrnobtained by measurement during exciting the structure by arnhammer, the high vibration response frequencies arernindicated clearly.rnOn the base of the two experiments, the vibration propertiesrnof local structure of a storage/retrieval machine arernthoroughly grasped. This is a foundation of structurernmodification to reduce the vibrating noise of storage/retrievalrnmachine during operating conditions.

机译：本文介绍了两种不同方法在系统识别中的比较。将实验模态分析和操作模态分析应用于存储/检索机（S / R机）的局部结构。不同的振动测量方法和不同的理论分析方法为我们提供了比仅一种方法更多的信息。结果表明，两种方法具有较好的一致性，在正常工况下通过测量获得的振动完整性要比在用金锤激励结构时通过测量获得的振动完整性更好。从用金锤激励结构过程中测量得到的系统频率响应函数，清楚地表明了较高的振动响应频率。在两个实验的基础上，充分掌握了存储/回收机器局部结构的振动特性。这是进行结构改造以降低存储/检索机器在运行条件下的振动噪声的基础。

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来源
《IMAC-XXI: a conference amp; exposition on structural dynamics》|2003年|p.1-8|共8页
会议地点 Kissimmee FL(US)
作者
Yu Zheng; Shibo Xiong;
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作者单位

Research Institute of Mechno-Electronic EngineeringrnTaiyuan University of TechnologyrnNo.53 Xikuang Street 030024 Taiyuan, Shanxi, P.R.Chainrne-mail: Zheng1959@163.com;

Research Institute of Mechno-Electronic EngineeringrnTaiyuan University of TechnologyrnNo.53 Xikuang Street 030024 Taiyuan, Shanxi, P.R.Chain;

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正文语种 eng
中图分类结构力学;结构力学;
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8. EXPERIMENTAL MODAL ANALYSIS AND DYNAMIC COMPONENT SYNTHESIS VOL. Ⅱ Measurement Techniques for Experimental Modal Analysis [R] . Randall J. Allemang, David L. Brown, Robert W. Rost 1987

机译：实验模态分析和动态组件合成VOL。 Ⅱ实验模态分析的测量技术

THE COMPARISON OF MODAL ANALYSIS BY TWO DIFFERENT EXPERIMENTAL APPROACHES

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