-------------------------------------------------------</span>
        <span class="keyword">function</span> this = setCteParams(this,int)
            <span class="comment">% Needed properties</span>
            r    = int.eff_radius;
            m    = int.eff_mass;
            y    = int.eff_young;
            v0   = abs(int.kinemat.v0_n);
            e    = this.restitution;
            e2   = e^2;
            S    = this.unload_param;
            beta = pi/log(e);

            <span class="comment">% Lo