The slitting and cross cutting as one of the substantial manufacturing methods in paper equipment and paper processing, are characterized in many applications by practice problems, which lead to productivity and quality losses.Analysing the knowledge of shear-slitting shows, that there are great gaps in the fundamental understanding of the slitting procedure as well as in its conversion to mechanical engineering. For this reason our institute carries out a research project to analyse the slitting procedure on a theoretical and experimental basis. The aim of this project is to clear up the correlations of shear-slitting and to derive measures for the improvement of slit quality and blade durability in practice.Because of the complex, three-dimensional state of stress during the slitting process, the problem cannot be solved analytically and the finite-element-method is used to calculate the states of stress and strain. For the modelling of the material behavior of paper, a three-dimensional material law is deduced. The influence of the material law and the cutting tool geometry on the shear slitting process is studied. The achieved results of the FEM-analysis shall be compared to experimental results in later research work
