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Modal Analysis with the DMS/TSA System
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English
Abstract
Digital signal processing systems using the FFT (Fast Fourier Transform) have increased the efficiency and power of modal analysis in solving dynamics problems. One function of these systems, the generation of animated deformation plots, provides a very useful tool for studying complex structures vibrating at resonant frequencies. The digital processing systems have automated the procedure for developing these plots and have allowed the extraction of multiple plots from a single set of data. This paper outlines the development of animated deformation plots from experimental frequency response information. Emphasis is placed on the use of a local and timeshared analysis system (the DMS/TSA) for cost effective analysis procedures.
Authors
Citation
Durham, D. and Russell, R., "Modal Analysis with the DMS/TSA System," SAE Technical Paper 760877, 1976, https://doi.org/10.4271/760877.Also In
References
- Brigham E.O. “The Fast Fourier Transform” Englewood Cliffs, N.J. Prentice-Hall 1974
- Klosterman A. Zimmerman R. “Modal Survey Activity via Frequency Response Functions” Paper 751068 SAE National Aerospace Engineering Meeting Los Angeles November 1975
- Klosterman A. McClelland W. “Combining Experimental and Analytical Techniques for Dynamic System Analysis” Tokyo Seminar on Finite Element Analysis Tokyo November 1973
- Sisson T. Zimmerman R. Martz J. “Determination of Modal Properties of Automotive Bodies and Frames Using Transient Testing Techniques” Paper 730502 SAE Automobile Engineering Meeting Detroit May 1973