Craig C. Smith, Forrest L. Staffanson, "Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing", Shock and Vibration, vol. 3, Article ID 919032, 9 pages, 1996. https://doi.org/10.3233/SAV-1996-3601
Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing
Controlled amplitude and phase relationships between multiaxial shaker inputs (i.e., spatial shaping) provides for more realistic simulation of a service environment than does conventional frequency shaping alone. Spatial shaping is described in terms of a basic mathematical model relating test article response (absolute and relative motions) to excitation by the shaker. Advantages and objectives are viewed through spectral relationships. The objective of simulating dynamic responses as in service is shown to be the duplication of the resultant cross-modal response for all important modes, even if the sources of excitation in service are unknown.
Copyright © 1996 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.