Journal
NONLINEAR DYNAMICS
Volume 39, Issue 1-2, Pages 197-211Publisher
SPRINGER
DOI: 10.1007/s11071-005-1926-9
Keywords
chaotic dynamics; damage detection; nonlinear fluid-structural systems
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The dynamics of a panel forced by transverse loads and undergoing limit cycle oscillations and chaos is investigated. The nonlinear von Karman plate theory is used to obtain a model for healthy and damaged panels. Damage is modeled by a loss of stiffness in a portion of the plate. The presence of low levels of damage is identified by using an external nonlinear excitation and analyzing the attractor of the resulting dynamics in state space. Most of the current studies of such problems are based on linear theories and linear structures. In contrast, the results presented are obtained by using and enhancing nonlinear and chaotic dynamics, and have the advantage of an increased accuracy in detecting damage and monitoring structural health.
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