Estimation of the Fuzzy Substructure Model Parameters Using the Mean Power Flow Equation of the Fuzzy Structure

[+] Author and Article Information
C. Soize

Structures Department, ONERA, BP 72, F-92322 Chatillon Cedex, France

J. Vib. Acoust 120(1), 279-286 (Jan 01, 1998) (8 pages) doi:10.1115/1.2893818 History: Received March 01, 1996; Revised October 01, 1996; Online February 26, 2008


This paper presents a theoretical approach for identifying the dimensionless mean coefficient of participating fuzzy mass which is the main unknown parameter of the type I or II fuzzy law previously introduced by the author. This method is based on the use of the associated power flow equation, each power term being identified by using a global statistical energy analysis of the fuzzy structure (master structure with its fuzzy substructures). Identification is then carried out by solving a nonlinear constrained optimization problem. An example is given to illustrate the theoretical results.

Copyright © 1998 by The American Society of Mechanical Engineers
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