A New Time Domain Multiple Input Modal Analysis Method

[+] Author and Article Information
D. W. Cho, S. M. Wu

Mechanical Engineering Department, University of Wisconsin-Madison, Madison, Wisconsin 53706

K. F. Eman

Department of Mechanical and Nuclear Engineering, Northwestern University, Evanston, Illinois 60201

J. Eng. Ind 109(4), 377-384 (Nov 01, 1987) (8 pages) doi:10.1115/1.3187142 History: Received July 10, 1987; Online July 30, 2009


A time domain approach for multiple input modal analysis of oscillatory systems is proposed. The mathematical foundation for the approach is given along with its applications to a simulated lumped parameter system and the structural dynamics analysis of a milling machine. It has been shown that the proposed multivariate time series models are able to identify the complex mode shapes from multiple input structural test data. The advantages of the proposed method in comparison to existing methods are also highlighted.

Copyright © 1987 by ASME
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