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Comparison of Modal Test Results: Multipoint Sine Versus Single-Point Random
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Abstract
Several software packages have been developed for use with minicomputers to decrease the test schedule and cost of modal surveys. The newer development referred to as “single-point random,” appears to have potential cost and schedule advantages, but evaluations of the adequacy of test results and test experience on complex structures are almost nonexistent.
The tests, performed on the Mariner Jupiter/Saturn (MJS) spacecraft, provide an additional comparison of the more traditional multipoint sine dwell and the single-point random modal test methods.
Authors
- E.L. Leppert - Jet Propulsion Lab, California Institute of Technology
- S.H. Lee - Jet Propulsion Lab, California Institute of Technology
- F.D. Day - Jet Propulsion Lab, California Institute of Technology
- P.C. Chapman - Jet Propulsion Lab, California Institute of Technology
- B.K. Wada - Jet Propulsion Lab, California Institute of Technology
Citation
Leppert, E., Lee, S., Day, F., Chapman, P. et al., "Comparison of Modal Test Results: Multipoint Sine Versus Single-Point Random," SAE Technical Paper 760879, 1976, https://doi.org/10.4271/760879.Also In
References
- Klosterman A. L. Zimmerman R. “Modal Survey Activity Via Frequency Response Functions,” SAE Paper No. 751068 Aerospace Engineering and Manufacturing Meeting Los Angeles, California November 17 20 1975
- Richardson M. Potter R. “Identification of the Modal Properties of an Elastic Structure from Measured Transfer Function Data,” 239 246 May 1974
- Sloane E. McKeever B. “Modal Survey Techniques and Theory,” SAE National Aerospace Engineering and Manufacturing Meeting Culver City, Los Angeles, California November 17 20 1975
- Knauer C. D. Peterson A. J. Rendahl N. B. “Space Vehicle Experimental Modal Definition Using Transfer Function Techniques,” SAE National Aerospace Engineering and Manufacturing Meeting Culver City, Los Angeles, California November 17 20 1975
- Leppert E. L. Wada B. K. Miyakawa R. “Modal Test of the Viking Orbiter,” Shock and Vibration Bulletin 44 August 1974
- Wada B. K. “Modal Test: Measurement and Analysis Requirements,” SAE Paper No. 751066 National Aerospace Engineering Meeting Los Angeles, California November 17 20 1975