6 \(E_{\mathcal{l}}\left(\mathbf{u}\mathrm{,}\varphi\right)=\int_{\Omega}{\left\{g\left(\varphi\right)\psi^{e}\left(\mathbf{\varepsilon}\left(\mathbf{u}\right)\right)\right\}d\mathbf{x}+\mathcal{G}_{c}\int_{\Omega}{\left(\frac{\left(1-\varphi\right)^{2}}{4\mathcal{l}}\mathcal{+l}\left|\nabla\varphi\right|^{2}\right)d\mathbf{x}}}\ ,\)