Experiments and prediction of the spreading behavior of fibrous tows by means of the Discrete Element Method Master Thesis Amir Ahmad Bakhtiary Davijani June 2012 University of Twente Faculty of Engineering Technology Department of Mechanical Engineering Chair of Production Technology Graduation committee: Prof. Dr. rer.-nat. S. Luding Prof. Dr. ir. R. Akkerman ir. B. Cornelissen Dr. T. Weinhart