S21  Vibrações e Análise Modal
 
 Title:
IDENTIFICATION OF ELASTIC CONSTANTS BY MODAL ANALYSIS
 
Summary :
ABSTRACT. THIS PAPER DEALS WITH ELASTIC PARAMETER IDENTIFICATION IN RECTANGULAR PLATES. A METHOD IS DESCRIBED FOR THE IDENTIFICATION OF ELASTIC PARAMETERS FROM MEASURED NATURAL FREQUENCIES OF COMPLETELY FREE PLATE. THE PARAMETER ESTIMATION PROBLEM IS SOLVED BY MINIMIZING, IN A LEAST SQUARES SENSE, THE DIFFERENCES BETWEEN MEASURED AND CALCULATED FREQUENCIES. THE NUMERICAL METHOD FOR CALCULATING THE NATURAL FREQUENCIES COMPRISES A RAYLEIGH-RITZ FORMULATION USING CHARACTERISTIC ORTHOGONAL POLYNOMIALS IN THE SERIES REPRESENTING THE DISPLACEMENT FUNCTIONS, WHICH ARE APPROPRIATED FOR REPRODUCING THE BOUNDARY COMPLETELY FREE CONDITIONS. KEY WORDS: PARAMETER IDENTIFICATION, ELASTIC CONSTANTS, MODAL ANALYSIS  
 
Author :
Alves Borges, Lavinia Sanabio
Bastos, Sergio Ferreira
Rochinha, Fernando Alves
 
 
Paper View :

 

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