Order and chaos around resonant motion in librating spring–mass–spherical pendulum

A new way to compute the Lyapunov characteristic exponents for non-smooth and discontinues dynamical systems

“…In some cases, for instance, when the LPI is oscillatory, it is convenient to use the global maximum of the LPI in the time interval [0,T]i n s t e a do ft h ei n s t a n tv a l u e of ln |v(t)| [4]:…”