Accession Number : AD0906463

Title :   Factor Analysis as an Exploratory Tool in the Modal Analysis of Randomly-Loaded Vibrating Structures.

Descriptive Note : Technical publication,

Corporate Author : NAVAL WEAPONS CENTER CHINA LAKE CA

Personal Author(s) : Christiansen, R. G. ; Cruise, D. R.

Report Date : DEC 1972

Pagination or Media Count : 77

Abstract : A heuristic approach to the analysis of multichannel experimental data such as that obtained from vibrating structures is presented. The spatial covariance matrix, the Fourier transformation, and notions from factor analysis are used to obtain approximate mode shapes and natural frequencies for structures responding to random loadings. This approach is demonstrated using experimental data obtained from the response of a long cantilevered cylindrical shell subjected to random loading. (Author)

Descriptors :   (*CYLINDRICAL BODIES, VIBRATION), (*VIBRATION, FACTOR ANALYSIS), HARMONIC ANALYSIS, INTEGRAL TRANSFORMS, MATRICES(MATHEMATICS), SERIES(MATHEMATICS), PROBABILITY DENSITY FUNCTIONS, ALGORITHMS, HARMONIC ANALYSIS, RESONANT FREQUENCY, CANTILEVER BEAMS, EXPERIMENTAL DATA, THEORY, FOURIER ANALYSIS, EXTERNAL STORES, JET AIRCRAFT, EXPERIMENTAL DATA, ACCELEROMETERS, DIGITAL RECORDING SYSTEMS, CORRELATION TECHNIQUES, POWER SPECTRA.

Subject Categories : Statistics and Probability
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE