基于仿真技术的汽车拼焊板冲压成形研究

Research of Stamping Forming for Automotive Tailor Welded Blank Based on Simulation Technology

运用DYNAFORM软件对低碳钢材料拼焊板进行冲压成形仿真研究,直观地了解成形过程。通过对仿真后的成形极限图进行分析,发现初始条件下的设计方案导致破裂和起皱这两种缺陷。因此对冲压成形的工艺条件进行适当调整,提出改进的设计方案,再次进行仿真,最终提高了冲压成形质量。研究表明,合理选取冲压速度、增设开放式拉延筋可以有效地解决拼焊板冲压成形过程中的破裂和起皱这两种缺陷。

The simulation of stamping forming for low-carbon steel tailor welded blank was researched by using DYNAFORM software, and its forming process was comprehended intuitively. The two kinds of flaws,namely breakage and corrugation, which were caused by the design proposal under initial condition were discovered by analyzing the forming limit chart after the simulation. Therefore, the technological conditions of stamping forming were adjusted appropriately, and the improved design proposal was proposed, then the simulation was carried out once more, the stamping forming quality was improved finally. The research indicates that selecting reasonable stamping velocity and building open style drawing-bar can effectively solve two kinds of flaws, breakage and corrugation in forming process.