1. National School of Engineers of Sfax (ENIS) Research Laboratory of Mechanics, Modeling and Manufacturing (LA2MP) Route de la Soukra km 4 3038 SFAX REPUBLIC OF TUNISIA
2. Leibniz Universität Hannover, Institute of Forming Technology and Machines (IFUM) An der Universität 2 30823 HANNOVER FEDERAL REPUBLIC OF GERMANY