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Digital Filtering for Analysis of Structural Vibrations
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English
Abstract
A digital signal analysis system to aid in compiling vibration test data is described. The objectives of the system are explained, mathematical properties are derived, and system operation is discussed with respect to hardware, characteristics, and sample output.
This method for digital filtering of time series data has proved to be fast, effective, and an easily implemented method of analyzing structural properties. In addition to providing the design engineer with all of the traditional forms of output offered by analog systems, the computer-based nature of the digital filter system facilitates the use of large-scale dynamic simulations requiring mode identification and other analytical software.
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Citation
Malen, D. and Vaughan, E., "Digital Filtering for Analysis of Structural Vibrations," SAE Technical Paper 730503, 1973, https://doi.org/10.4271/730503.Also In
References
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- Bracewell R. M. “The Fourier Transform and Its Applications.” New York McGraw Hill 1965
- Enochson L. Otnes R. “Programming and Analysis for Digital Time Series Data,” The Shock and Vibration Center 1968
- Cooley Lewis Welch “The Fast Fourier Transform Algorithm and its Applications,” IBM Research Paper RC1743 February 1967
- Davis J. C. “Modal Modeling Techniques for Vehicle Shake Analysis.” Paper 720045 presented at SAE Automotive Engineering Congress Detroit January 1972
- Elliott W. A. “Plastic Models for Dynamic Structural Analysis.” The Shock and Vibration Bulletin December 1969