Linear Direct Stiffness Method

An educational code which performs basic linear direct stiffness method using bar elements in 2D or 3D.

This code performs static structural analysis using the linear direct stiffness method. The code accepts mesh information (nodal coordinates; nodal connectivity) stored in a particular format: Matlab triangulation structures. This imposes some limitiations on nodal connectivity but allows for easy data handling and plotting.

The solver LDS_Solver.m works equally well with 2D and 3D triangulations. Users can optionally define which nodes are fixed, loaded, and the direction of those loads.

Plotting commands in the _runme script use Kevin Moerman's excellent GibbonCode package, which is indispensable for image and geometry processing and visualization.