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Shock and Vibration
Volume 11, Issue 1, Pages 1-7

A New Method for Analysis of Complex Structures Based on FRF’s of Substructures

C.Q. Liu1 and Xiaobo Liu2

1DaimlerChrysler Corporation, CIMS 481-47-10, 800 Chrysler Drive East, Auburn Hills, MI 48326-2757, USA
2Optimal CAE, 27275 Haggerty Rd., Novi, MI 48377, USA

Received 17 July 2003; Revised 28 August 2003

Copyright © 2004 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.


A new method is presented for synthesizing the dynamic responses of a complex structure based upon the frequency response functions of the substructures. This method is shown to be superior to traditional methods for several reasons: (i) It can be applied to a generic class of systems. (ii) The analyst is spared the responsibilities of eliminating the coupling forces and rearranging the equations of motion. (iii) The coupling forces and the responses of the total system can be obtained simultaneously and efficiently.