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• W2892066630 abstract "For a nondegenerate analytic system with a conserved quantity, a classic result by Lyapunov guarantees the existence of an analytic manifold of periodic orbits tangent to any two-dimensional, elliptic eigenspace of a fixed point satisfying nonresonance conditions. These two dimensional manifolds are referred as Lyapunov Subcenter Manifolds (LSM). Numerical and experimental observations in the nonlinear vibrations literature suggest that LSM's often persist under autonomous, dissipative perturbations. These perturbed manifolds are useful since they provide information of the asymptotics of the convergence to equilibrium. In this paper, we formulate and prove precise mathematical results on the persistence of LSM under dissipation. We show that, under mild non-degeneracy conditions on the perturbation, for small enough dissipation, there are analytic invariant manifolds of the perturbed system that approximate (in the analytic sense) the LSM in a fixed neighborhood. We also provide examples that show that some non-degeneracy conditions on the perturbations are needed for the results to hold true. We also study the dependence of the manifolds on the dissipation parameter. If $varepsilon$ is the dissipation parameter, we show that the manifolds are real analytic in $(-varepsilon_0, varepsilon_0) setminus {0} $ and $C^infty $ in $(-varepsilon_0, varepsilon_0)$. We construct explicit asymptotic expansions in powers of $varepsilon$ (which presumably do not converge). Finally, we present applications of our results to several mechanical systems." @default.
• W2892066630 created "2018-09-27" @default.
• W2892066630 creator A5004732229 @default.
• W2892066630 creator A5048968881 @default.
• W2892066630 date "2018-09-04" @default.
• W2892066630 modified "2023-09-27" @default.
• W2892066630 title "Global persistence of Lyapunov-subcenter-manifolds as spectral submanifolds under dissipative perturbations" @default.
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• W2892066630 hasPublicationYear "2018" @default.
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