S9  Fenômenos Não-Lineares e Caóticos em Engenharia
 
 Title:
EXPERIMENTAL VIBRATION CHARACTERISTICS OF A BEAN WITH NONLINEAR SUPPORT USING RECEPTANCE COUPLING ANALYSIS
 
Summary :
THIS PAPER APPLIES THE MULTI-HARMONIC NONLINEAR RECEPTANCE COUPLING APPROACH (MUHANORCA) (FERREIRA 1998) TO EVALUATE THE FREQUENCY RESPONSE CHARACTERISTICS OF A BEAM WHICH IS CLAMPED AT ONE END AND SUPPORTED AT THE OTHER END BY A NONLINEAR CUBIC STIFFNESS JOINT. IN ORDER TO APPLY THE SUBSTRUCTURE COUPLING TECHNIQUE, THE PROBLEM WAS CHARACTERISED BY COUPLING A CLAMPED LINEAR BEAM WITH A NONLINEAR CUBIC STIFFNESS JOINT. THE EXPERIMENTAL RESULTS WERE OBTAINED BY A SINUSOIDAL EXCITATION WITH A SPECIAL FORCE CONTROL ALGORITHM WHERE THE LEVEL OF THE FUNDAMENTAL FORCE IS KEPT CONSTANT AND THE LEVEL OF THE HARMONICS IS KEPT ZERO FOR ALL THE FREQUENCIES MEASURED.  
 
Author :
Ewins, David J.
Ferreira, Janito Vaqueiro
 
 
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