【摘要】 通过对球形面多道次成形的有限元数值模拟,分析了多道次成形数值模拟的关键技术,研究了多道次成形的特点及规律,阐述了成形过程中易产生的缺陷和需解决的关键问题。结果表明:多道次成形可以优化板材的变形路径,使变形均匀,有效地抑制起皱,提高板材成形能力。更多还原

【Abstract】 By the finite element numerical simulation of multistep forming for sphere surface,its key technology,the behaviors of the forming process were analyzed.The defects liable to happen and the key problems have to be solved in the forming process were explored in detail.The simulation results show that the multi-step forming can optimize the deformation path of sheet metal,make the deformation more uniformly,effectively restrain wrinkles and improve the deformation capacity of sheet metal.更多还原