Multishaker Broadband Excitation for Experimental Modal Analysis 831435
A new method of excitation for modal testing is described which combines the benefits of the two most often used techniques: multipoint sine dwell and single-point random. This new method--multishaker broadband excitation--employs an array of shakers to develop multiple sets of frequency response functions, which, as evidenced by their reciprocity and consistency, yield a more accurate representation of the structure's dynamics, resulting in a better modal model. Additionally, this new technology offers a significant reduction in time required to perform a modal survey. An example application to the space shuttle orbiter Enterprise is described.
Citation: Hunt, D. and Peterson, E., "Multishaker Broadband Excitation for Experimental Modal Analysis," SAE Technical Paper 831435, 1983, https://doi.org/10.4271/831435. Download Citation
Author(s):
David L. Hunt, Edward L. Peterson
Pages: 16
Event:
Aerospace Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Spacecraft
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