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TUTORIALS
Duffing Equation for a Simple Pendulum Driven by a Harmonic Moment: Duffing_pendulum.pdf
Lasič, Planinaič, Torzo: Torsion Pendulum, the Mechanical Nonlinear Oscillator: torsion_pendulum_nonlinear.pdf
Cornell University, Lecture Notes: nonlinear_vibration.pdf
Georgia Tech, nonlinear_oscillator_notes.pdf
Free Vibration of a Single-degree-of-freedom System with Nonlinear Stiffness: nonlin_period.pdf
MATLAB SCRIPTS
Free vibration of a pendulum, ode45 numerical method. This program solves the nonlinear equation of motion such that large angular displacements are allowed.
pendulum_free_ode45.m
pendulum_free_function.m
Free Vibration of a Single-degree-of-freedom System with Nonlinear Stiffness
sdof_stiff2_ode45.m
sdof_stiff2_free_function.m
Free Vibration of a Single-degree-of-freedom System with Nonlinear Stiffness, Runge-Kutta Fourth order method.
RK4_fv_nl1.m
Duffing Equation for a Simple Pendulum Driven by a Harmonic Moment.
Duffing_pendulum.m

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