Rotorcraft stability analysis using Lyapunov characteristic exponents estimated from multibody dynamics
Gianni Cassoni,
Alessandro Cocco,
Aykut Tamer
et al.
Abstract:Stability analysis of complex, nonlinear dynamical systems is a challenge. The use of Lyapunov Characteristic Exponents through a Jacobian-less method is proposed as a means to identify the Maximum Lyapunov Characteristic Exponent, namely the fundamental stability indicator of a generic problem, solely from time series obtained through general-purpose multibody dynamics simulations of complex rotorcraft aeromechanics models. The method is first applied to a relatively simple scenario concerning the identificat… Show more
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