.html" title="A class representing the contact forces and moments arising from a contact interaction.">ContactForces</a></code> object. This is a pure virtual method that must be implemented by any subclass of <code><a class="el" href="classnetdem_1_1_contact_model.html" title="An abstract base class for contact models.">ContactModel</a></code>.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">cnt_forces</td><td>A pointer to the <code><a class="el" href="