written by Juan Aguirregabiria
edited by Wolfgang Christian

The Ejs Duffing Chaos model computes the solutions to the non-linear Duffing equation, which reads, x'' + 2 γ x' - x (1 - x²) = f cos( ω t), where each prime denotes a time derivative.  The simulation displays two solutions with different initial positions and a plot of phase.  The evolution parameters can be changed via textboxes.  You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting "Open Ejs Model" from the pop-up menu item.  

Ejs Duffing Chaos model was created using the Easy Java Simulations (Ejs) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the ejs_ehu_chaos_Duffing_chaos.jar file will run the program if Java is installed.  Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models.  Additional Ejs models for non-linear dynamics and chaos are available.  They can be found by searching ComPADRE for Open Source Physics, OSP, or Ejs.

• Download ejs_ehu_chaos_Duffing_chaos.jar - 1257kb Java Archive File

Last Modified June 4, 2014

This file has previous versions.

The source code zip archive contains an XML representation of the Ejs Duffing Chaos Model.  Unzip this archive in your Ejs workspace to compile and run this model using Ejs.

• Download ejs_ehu_chaos_Duffing_chaos.zip - 5kb Compressed File

Published September 29, 2008
Last Modified September 5, 2011

This file has previous versions.