del</i> class and is specifically designed for mechanical physics simulations. Each node in the model has 2 degrees of freedom:</p><div><ul><li>2 displacement components (ux, uy)</li></ul></div><!--/introduction--><h2>Contents</h2><div><ul><li><a href="#1">Methods</a></li><li><a href="#2">Author</a></li><li><a href="#3">Version History</a></li><li><a href="#4">Class definition</a></li><li><a href="#5">Public attributes</a></li><li><a href="#6">Model data</a></li><li><a href="#7">Embedded related data</a></l