TY - JOUR
T1 - LOCALIZED VIBRATIONS OF DISORDERED MULTI-SPAN BEAMS
T2 - THEORY AND EXPERIMENT.
AU - Pierre, Christophe
AU - Tang, De Man
PY - 1986
Y1 - 1986
N2 - The localization of the free modes of vibration of disordered multi-span beams is investigated, both theoretically and experimentally. It is shown that small deviations of the span lengths from an ideal value may have drastic effects on the dynamics of the system, by inhibiting the propagation of vibrations in the structure. Emphasis is placed on the development of a perturbation method that allows one to obtain the localized modes of vibration of the disordered system without a global eigenvalue analysis of the entire system. Such a perturbation analysis is cost effective and accurate. More importantly, it provides physical insight into the localization phenomenon, and allows one to formulate a criterion that predicts the occurence of localized modes.
AB - The localization of the free modes of vibration of disordered multi-span beams is investigated, both theoretically and experimentally. It is shown that small deviations of the span lengths from an ideal value may have drastic effects on the dynamics of the system, by inhibiting the propagation of vibrations in the structure. Emphasis is placed on the development of a perturbation method that allows one to obtain the localized modes of vibration of the disordered system without a global eigenvalue analysis of the entire system. Such a perturbation analysis is cost effective and accurate. More importantly, it provides physical insight into the localization phenomenon, and allows one to formulate a criterion that predicts the occurence of localized modes.
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M3 - Conference article
AN - SCOPUS:0022599112
SN - 0273-4508
SP - 445
EP - 455
JO - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
JF - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
IS - pt 2
ER -