<h1>Interaction Model and Material definition<aclass="headerlink"href="#interaction-model-and-material-definition"title="Permalink to this headline">¶</a></h1>
<p>One needs to define tact_behav object with <aclass="reference internal"href="classes.html#pylmgc90.pre_lmgc.tact_behav"title="pylmgc90.pre_lmgc.tact_behav"><ttclass="xref py py-func docutils literal"><spanclass="pre">tact_behav()</span></tt></a> which corresponds to an
<h1>Interaction model and parameters definition<aclass="headerlink"href="#interaction-model-and-parameters-definition"title="Permalink to this headline">¶</a></h1>
<p>One needs to define a tact_behav object with <aclass="reference internal"href="classes.html#pylmgc90.pre_lmgc.tact_behav"title="pylmgc90.pre_lmgc.tact_behav"><ttclass="xref py py-func docutils literal"><spanclass="pre">tact_behav()</span></tt></a> which corresponds to an
interaction model with its parameters.</p>
<p>Meaning of the parameters</p>
<ulclass="simple">
<li>friction: either constant <em>fric</em> or <em>stfr</em> static and <em>dyfr</em> dynamics</li>