Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lyapunov exponent maps applied to damage detection of aging nonlinear highway infrastructures
Aging highway structures can display complicated nonlinear dynamics behavior due to degradation of structural properties or crack damage, as well as to variations in environmental and dynamic loading conditions. This paper explores the feasibility of utilizing the spatial distribution of the Lyapunov exponents for damage detection in nonlinear bridge structures. In particular, this approach considers the chaotic nature of the response of general nonlinear highway bridges due to ambient traffic loadings in the analysis of the observed bridge response data for each monitoring locations. A novel algorithm, based on the average mutual information from observed data and a stochastic orthogonalization using polynomial chaoses, is used to efficiently extract the nonlinear bridge system invariants consisting of a set of Lyapunov exponents.
Lyapunov exponent maps applied to damage detection of aging nonlinear highway infrastructures
Aging highway structures can display complicated nonlinear dynamics behavior due to degradation of structural properties or crack damage, as well as to variations in environmental and dynamic loading conditions. This paper explores the feasibility of utilizing the spatial distribution of the Lyapunov exponents for damage detection in nonlinear bridge structures. In particular, this approach considers the chaotic nature of the response of general nonlinear highway bridges due to ambient traffic loadings in the analysis of the observed bridge response data for each monitoring locations. A novel algorithm, based on the average mutual information from observed data and a stochastic orthogonalization using polynomial chaoses, is used to efficiently extract the nonlinear bridge system invariants consisting of a set of Lyapunov exponents.
Lyapunov exponent maps applied to damage detection of aging nonlinear highway infrastructures
Jin, Shuang (Autor:in) / Livingston, Richard A. (Autor:in) / Marzougui, Dhafer (Autor:in)
Health Monitoring and Management of Civil Infrastructure Systems ; 2001 ; Newport Beach,CA,United States
Proc. SPIE ; 4337
03.08.2001
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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