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Identifying Modes of Large Structures from Multiple Input and Response Measurements
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English
Abstract
When mode shapes are identified from transfer function measurements, it is usually assumed that the structure can only be excited or its response measured at a single point. Hence, this method has become known as the “single point” testing method.
This paper discusses a new testing and data processing technique for obtaining modal parameters which does not require that the transfer function measurements be made using a single excitation or response point. For large structures this “multiple point” testing technique is in many cases, necessary for obtaining measurements of sufficient quality to identify the modes of vibration.
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Citation
Richardson, M. and Kniskern, J., "Identifying Modes of Large Structures from Multiple Input and Response Measurements," SAE Technical Paper 760875, 1976, https://doi.org/10.4271/760875.Also In
References
- Potter R. Richardson M. “Mass, Stiffness, and Damping Matrices from Measured Modal Parameters” ISA International Instrumentation - Automation Conference New York, N. Y. Oct. 28-31 1974
- Richardson M. “Modal Analysis Using Digital Test Systems” Seminar on Understanding Digital Control and Analysis in Vibration Test Systems Shock and Vibration Information Center publication U.S.A. May 1975