snetdem_1_1_contact_p_w.html" title="A class representing a contact between a particle and a wall.">ContactPW</a></code> object representing the contact point(s). </td></tr>
    <tr><td class="paramname">dt</td><td>The time step size for the simulation. </td></tr>
  </table>
  </dd>
</dl>

<p>Reimplemented in <a class="el" href="classnetdem_1_1_hertz_mindlin.html#a48fcfb3ae08ab14934d5a58b9399d4cd">netdem::HertzMindlin</a>, <a class="el" href="classnetdem_1_1_linear_spring.html#af1370d4a7672f1ee5a9871198a9f9