Effects of nonlinear damping on random response of beams to acoustic loadingEffects of both nonlinear damping and large-deflection are included in the theoretical analysis in an attempt to explain the experimental phenomena of aircraft panels excited at high sound pressure levels; that is the broadening of the strain response peak and the increase of the modal frequency. Two nonlinear damping models are considered in the analysis using a single-mode approach. Mean square maximum deflection, mean square maximum strain, and spectral density function of maximum strain for simply supported and clamped beams are obtained. It is demonstrated that nonlinear damping contributes significantly to the broadening of the response peak and to the mean square maximum deflection and strain.
Document ID
19860054207
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mei, C. (Old Dominion University Norfolk, VA, United States)
Prasad, C. B. (Old Dominion Univ. Norfolk, VA, United States)