pendulum_elastic_ode

pendulum_elastic_ode, an Octave code which sets up and solves the ordinary differential equations (ODE) that represent the behavior of a nonlinear elastic pendulum, with gravitational force G, spring constant K, unstretched length L, and mass M.

Licensing:

The information on this web page is distributed under the MIT license.

Languages:

pendulum_elastic_ode is available in a MATLAB version and an Octave version and a Python version.

Related Data and codes:

pendulum_elastic_ode_test

octave_ode, an Octave code which sets up various ordinary differential equations (ODE).

Reference:

• Paul D Williams,
  The RAW Filter: An Improvement to the Robert–Asselin Filter in Semi-Implicit Integrations,
  Monthly Weather Review,
  Volume 139, pages 1996-2007, June 2011.

Source Code:

• pendulum_elastic_conserved.m, evaluates a quantity that should be conserved by the ODE.
• pendulum_elastic_deriv.m, evaluates the right hand side of the ODE.
• pendulum_elastic_parameters.m, returns parameters of the ODE.