拼焊板在径向辅助压力下充液拉深工艺及数值模拟.PDFVIP

年 月 金属铸锻焊技术 sting · ging · lding 2010 1 Ca For We 拼焊板在径向辅助压力下充液拉深 工艺及数值模拟 石磊， 汪建敏， 龚贵春， 朱先忠 （江苏大学材料科学与工程学院， 江苏镇江212013 ） 摘 要：基于Dynaform 平台，就差厚拼焊板外缘径向辅助加压充液拉深工艺进行分析与研究，并以成形件最终壁 厚分布和焊缝移动量作为评定标准，通过与传统拉深工艺对比，找出差厚拼焊板在拉深过程中焊缝移动所特有的共性， 即在成形件底部焊缝向厚板侧移动，并在直壁处逐渐过渡到薄板侧。 模拟结果显示，合理控制液室模腔中的充液压力、 合理设计薄、厚板两侧的压边力及其分布、选择恰当的径向辅助压力能极大地提高拼焊板坯的成形性，并使成形件壁厚 分布均匀，焊缝移动量小。 关键词： 拼焊板；径向辅助压力；盒形件；焊缝移动；数值模拟 中图分类号： 文献标识码： 文章编号： TG386 A 1001-3814(2010)01-0094-05 Numerical Simulation of Tailor Welded Blank in Hydro-mechanical Deep 库 Drawing with Independent Radial Hydraulic Pressure SHI Lei, WANG Jianmin, GONG Guichun, ZHU Xianzhong 例 (School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China) Abstract ： Based on finite element simulation software Dynaform, the processes of square cup drawing using TWBS 案 with different thickness in Hydro-mechanical deep drawing under independent radial hydraulic pressure and conventional drawing were discussed and studied. The influence of two methods of drawing on the forming quality was analyzed by E A taking wall-thickness distribution and weld-line movement as standard. The common features were found out about the character of wall-thickness distribution and w