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Statistical correlation analysis for comparing vibration data from test and analysisA theory was developed to compare vibration modes obtained by NASTRAN analysis with those obtained experimentally. Because many more analytical modes can be obtained than experimental modes, the analytical set was treated as expansion functions for putting both sources in comparative form. The dimensional symmetry was developed for three general cases: nonsymmetric whole model compared with a nonsymmetric whole structural test, symmetric analytical portion compared with a symmetric experimental portion, and analytical symmetric portion with a whole experimental test. The theory was coded and a statistical correlation program was installed as a utility. The theory is established with small classical structures.
Document ID
19860015547
Document Type
Technical Memorandum (TM)
Authors
Butler, T. G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Strang, R. F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Purves, L. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hershfeld, D. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 5, 2013
Publication Date
February 1, 1986
Subject Category
STRUCTURAL MECHANICS
Report/Patent Number
REPT-84B0561
NASA-TM-86081
NAS 1.15:86081
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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