Forced Nonlinear Oscillator
Forced Nonlinear Oscillator
The oscillator consists of a unit mass, whose motion is restricted to a horizontal line, and two linear springs. The springs are attached to barriers, which are either fixed or oscillate in the vertical direction. The motion of the mass is governed by a nonlinear second-order differential equation, whose solution is calculated numerically. The phase plot shows the current position (red) and the equilibria (green), that is, points where the resultant force is zero.