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

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.

[1]  Victor W. Sparrow,et al.  Incorporating compressional and shear wave types into fuzzy structure models for plates , 1995 .

[2]  Christian Soize,et al.  Probabilistic structural modeling in linear dynamical analysis of complex mechanical systems. II - Numerical analysis and applications , 1986 .

[3]  Christian Soize A model and numerical method in the medium frequency range for vibroacoustic predictions using the theory of structural fuzzy , 1992 .

[4]  Victor W. Sparrow,et al.  Backscattering from a baffled finite plate strip with fuzzy attachments , 1995 .

[5]  Daniel A. Russell The Theory of Fuzzy Structures and its Application to Waves in Plates and Shells. , 1995 .

[6]  Christian Soize,et al.  Vibration damping in low-frequency range due to structural complexity. A model based on the theory of fuzzy structures and model parameters estimation , 1996 .

[7]  M. Strasberg,et al.  Vibration damping of large structures induced by attached small resonant structures , 1993 .

[8]  Allan D. Pierce,et al.  Resonant-Frequency-Distribution of Internal Mass Inferred From Mechanical Impedance Matrices, With Application to Fuzzy Structure Theory , 1997 .

[9]  Christian Soize,et al.  Linear dynamic analysis of mechanical systems in the medium frequency range , 1986 .

[10]  Christian Soize,et al.  Probabilistic structural modeling in linear dynamic analysis of complex mechanical systems, I - Theoretical elements , 1986 .

[11]  Victor W. Sparrow,et al.  Fundamental Structural-Acoustic Idealizations for Structures with Fuzzy Internals , 1995 .

[12]  Christian Soize,et al.  Numerical methods in elastoacoustics for low and medium frequency ranges , 1992 .

[13]  Victor W. Sparrow,et al.  Implementation of discrete fuzzy structure models in Mathematica , 1994 .

[14]  Richard H. Lyon STATISTICAL ENERGY ANALYSIS AND STRUCTURAL FUZZY , 1995 .