5 th European LS-DYNA Users Conference Optimisation (2) 6d - 51 Topology optimization in crashworthiness design Authors: Larsgunnar Nilsson Engineering Research Nordic AB and Div. Solid Mechanics, University of Linköping Jimmy Forsberg Div. Solid Mechanics, University of Linköping Correspondence: Larsgunnar Nilsson Engineering Research Nordic AB Telephone: +46-13-236680 Fax: +46-13-214104 Email: [email protected] Keywords: Topology optimization, explicit finite element analysis, contact-impact, nonlinear problems