Numerical simulation of car body elements pressing applying tailor welded blanks – practical verification of results

The cycle of investigations on applying tailor welded blanks (TWB) for sheet forming processes was conducted at Department of Materials Technology of the Silesian University of Technology and as The European Research Project Acronym SIM-TWB. The model of tailor welded blank (TWB model) have been worked out and great number of FEM simulations of stamping process of different geometry drawpieces using TWB were conducted. The paper presents the practical verification of simulation results of stamping process of car body drawpieces: B-pillar and reinforcement of floor of boot, applying TWB for stamping. Stampack – a commercial program for FEM simulation was applied, as well as worked out 5-zones TWB model have been used. The practical verification showed the good agreement of results of simulation and practical experiments of stamping processes of both chosen drawpieces. Hence worked out TWB model is proper and recommend to simulation of TWB forming processes.