How to use the Duffing Oscillator Tool

Setting Initial Conditions

• Click the mouse on the graphing plane to set the initial conditions for a trajectory.

Parameter Sliders

• Use the sliders to set the values of the damping constant b, the forcing amplitude A, the forcing frequency w, and the ratio of mechanical elastic force and electromagnetic force k.
• Press the mouse down on the slider knob for the parameter you want to change and drag the mouse back and forth, or click the mouse in the slider channel at the desired value for the parameter.

Time Series Buttons

• The buttons labeled
  [Position]
  [Velocity]
  [Acceleration]
  turn the time series graphs on and off.

Other Buttons

• [Clear] removes all the trajectories from the graphs.
• [Clear Transients] removes all transient data without disrupting the active trajectory.
• [Pause] stops a trajectory without canceling it.
• [Continue] resumes the motion of the paused trajectory.