Influence of draw bead upon simulation results of drawing process of unsymmetric shape stamping in the Dynaform 5.2 software

Abstract

The contribution treats of usability of draw beads application in drawing process and influence of draw bead upon simulation results of drawing process of chosen shape stamping. The utilisation of draw beads bears many advantages and its takes away many uncomfortable effects which guide drawing process. The utilisation of draw beads is analysed in the contribution, advised forms, proportions and location of draw beads in blankholder are described. The possibilities of order character of draw bead in Dynaform 5.2 software evolved by American company Engineering Technology Associates, Inc. (ETA) are described. In contribution the usability of application draw bead is solved for one of the representatives of intricate shape stampings from thin deep-drawing sheet-metal DC04 – the left cover of ventilator for truck Tatra 815. In contribution the analysis is carried out on blank model determined by maximum shear stress trajectories method which is optimal for drawing of this unsymmetric shape stamping.