B-pillar Stamping Die Design And Implementation Based On Dynaform

Automotive B-pillar is a typical structure components with complicated spatialcurved surface, asymmetric, high strength, and easy to crack and wrinkling. And themolding process is often handled by a series of processes such as blanking, drawing,trimming, punching and shaping. In the automobile side impact, B-pillar which is a mainparts bear the side of the collision force. Its quality is important to the performance of thevehicle and the security of personnel, but the quality of the B-pillar depends on the prosand cons of the die, therefore, it is significant to study the B-pillar die.With the rapid development of automobile industry, it brought opportunities andchallenges to the design and manufacture of automotive die. The traditional mold designand manufacture mainly depend on the experience of the technical staff, and it need torepeatedly try die and die repair. So it seriously hinder the product renewal ability,increase the cost of the product design and development, and affect the competitiveness ofproducts in the market. With the development of computer technology, finite elementtechnique and computer graphics, the sheet metal stamping simulation used by dynaformsoftware can predict molding defects and seek optimization method in the forming processof automotive B-pillar. It provides guidance for mold process analysis and design whichhas important significance and research value.The paper describes the general process of automotive B-pillar process design, andthe Status Quo based on dynaform stamping process, trends and problems. In the view ofthe problems existing in the production, it proposed the metal forming analysis methodbased on dynaform in the tension crack such as wrinkling and springback of numericalsimulation. On the basis of theoretical research, with the actual parts as an example, it findout the optimum processing parameters dealing with the problems and design process tooptimize the design, and provide a theoretical basis and design guidance for the actualproduction. The reliability and accuracy of the algorithm is verified by actual production.It can provide a practical tool for quantitative analysis and theoretical methods for similarproduct development and mold design.