Röger, MatthiasSchweizer, Ben2017-05-182017-05-182017-04-18http://hdl.handle.net/2003/3596310.17877/DE290R-17986We consider the energetic description of a visco-plastic evolution and derive an existence result. The energies are convex, but not necessarily quadratic. Our model is a strain gradient model in which the curl of the plastic strain contributes to the energy. Our existence results are based on a time-discretization, the limit procedure relies on Helmholtz decompositions and compensated compactness.enPreprint / Fakultät für Mathematik, TU Dortmund;2017-02visco-plasticitystrain gradient plasticityenergetic solutiondiv-curl lemma610preprint