Study Concerning the Maximal Depth of a Cylindrical Part Made from Tailor Welded Blanks

Abstract

The formability of tailor welded blanks is significantly reduced compared with the homogeneous blanks. This phenomenon is caused by the fact that there is a severe change in the material property sideways the welding line. Within 2-3 mm, in case of laser welding maybe less, there is a gradient of mechanical characteristics of materials. The research work presented in this paper deals with numerical simulation regarding forming of a cylindrical shaped part made from tailored blanks (TWBs), having the welding line situated symmetrical with respect to the part geometry. Due to dissimilar parent materials of the TWBs, it is difficult to anticipate the maximal depth of the formed part. The presented research is trying to determine the maximal depth of the TWBs part based on the maximal depth of the parts obtained from each parent material partly. To simulate the forming process of the cylindrical part the academically version of the Dynaform 5.8.1 software have been used. The obtained results are presented in the final part of this paper work.