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EDT: ElastoDynamics Toolbox for MATLAB

About EDT

The ElastoDynamics Toolbox (EDT) provides an extensive set of MATLAB functions to model wave propagation in layered media. It is based on the direct stiffness method and the thin layer method, presented by Kausel and Roësset. The toolbox is developed at KU Leuven, where it is used both for educational purposes and in research projects. The current version 2.2 (build 20) of the ElastoDynamics Toolbox has been released in August 2010.

Obtain EDT Applications Usage example

Elastodynamic problems

EDT is used to solve a variety of problems governed by wave propagation in the soil, such as:

  • site amplification,
  • the computation of dispersive surface waves in layered soils,
  • the calculation of the forced response of the soil due to harmonic and transient loading.

An example MATLAB *.m file that demonstrates the use of EDT can be found here.

Site amplification Amplification factor.

Amplification of a vertically incident shear wave in a layered halfspace.

Surface waves Dispersion curves.

Phase velocity of the dispersive Rayleigh wave modes in a layered halfspace.

Forced vibrations Green's functions.

Response of a homogeneous halfspace due to a vertical point load at the surface.

More information

The manual contains a detailed description of all functions and provides the user with extensive examples.

Obtaining EDT

More information on obtaining and installing EDT can be found here.


EDT is developed at the Structural Mechanics division of KU Leuven by Mattias Schevenels, Stijn François, and Geert Degrande.

Contact details

Matthias Germonpré
Telephone: +32 16 32 16 67
Fax: +32 16 32 19 88
Address: Department of Civil Engineering, KU Leuven, Kasteelpark Arenberg 40, B-3001 Leuven, Belgium


The ElastoDynamics Toolbox has been developed with the financial support of the Education Council and the Research Council of KU Leuven, the Research Foundation - Flanders, and the Institute for the Promotion of Innovation through Science and Technology in Flanders.

KU Leuven  Research Foundation - Flanders  Institute for the Promotion of Innovation through Science and Technology in Flanders