(1. 哈尔滨理工大学 材料科学与工程学院,哈尔滨 150040;2. 哈尔滨工业大学 材料科学与工程学院,哈尔滨 150001)
摘 要: 针对铝镁合金等低塑性板材的成形需要,提出了带主动径向加压的双路径加载充液拉深技术。应用数值模拟的方法,采用大型非线性动力显式分析软件ETA/Dynaform5.5,对
关键字: 5A06铝镁合金;充液拉深;数值模拟;双路径;主动径向压力
(1. School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China;2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 15001, China)
Abstract:Aimed at the forming need of aluminum-magnesium alloy and other low plasticity materials, a new double loading paths process of hydrodynamic deep drawing (HDD) with independent radial hydraulic pressure and chamber pressure was brought forward. The numerical simulations of the aluminum-magnesium alloy (5A06) flat bottom cylindrical cup’s HDD with double loading paths process were carried out by employing the large non-linear dynamic explicit analytical software ETA/Dynaform5.5. The chamber pressure variations to the formability effects were discussed. The influence of different independent radial hydraulic pressure loading paths on the forming quality was analyzed by taking the wall-thickness distribution as standard. The results show that adopting the reasonable liquid chamber pressure loading curves and the independent radial hydraulic pressure from 20 MPa to 45 MPa can increase the forming limitation of aluminum-magnesium alloy cup effectively. The drawing limitation obtained is 3.1.
Key words: aluminum-magnesium alloy (5A06); hydrodynamic deep drawing (HDD); numerical simulation; double loading paths; independent radial hydraulic pressure