A pointer to a new instance of this contact model. </dd></dl>

<p>Reimplemented in <a class="el" href="classnetdem_1_1_hertz_mindlin.html#aea81842323a50c60f013726065f75e3f">netdem::HertzMindlin</a>, <a class="el" href="classnetdem_1_1_linear_spring.html#a7c6f7710b72c617ea6f7af3c0cdf0b16">netdem::LinearSpring</a>, <a class="el" href="classnetdem_1_1_parallel_bond.html#a5a82aaff231747a0d2b36185b3f80834">netdem::ParallelBond</a>, and <a class="el" href="classnetdem_1_1_volume_based.html#abec667a36ab01327a01b57