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Shock and Vibration
Volume 4 (1997), Issue 3, Pages 163-168

Finite Element Model Optimization Using Diagonal Mass Matrix

B.P. Wang1 and F.H. Chu2

1Department of Mechanical Engineering, University of Texas at Arlington, Arlington, TX 76019, USA
2Mechanical Systems, National Space Program Office, Taiwan, China

Revised 9 April 1996; Accepted 27 December 1996

Copyright © 1997 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.


By adjusting the analytic mass matrix or stiffness parameters, the correlation between measured and computed modal data can be improved. This article proposes a simple method for model optimization. Numerical examples will be included to illustrate the proposed approach.