Transactions of Materials and Heat Treatment

Title：Electromagnetic flanging of aging aluminum alloy based on multi-field coupling simulation

Authors： Wang Zimin Zhao Tao Ma Boyang Luo Yimin Li Xiaolong Yu Haiping

Unit： Shanghai Spaceflight Precision Machinery Institute Harbin Institute of Technology

KeyWords： electromagnetic flanging 2219 aluminum alloy die clearance alloy thinning rate multi-field coupling simulation

ClassificationCode：TG391

year,vol(issue):pagenumber：2022,47(10):191-197

Abstract：

For the electromagnetic flanging of 2219 aluminum alloy shell in T6 state, a coupling model of electromagnetic field and structural field was established based on ANSYS/LS-DYNA. Then, the deformation rules of plate during the electromagnetic flanging process was analyzed by numerical simulation, and the influences of discharge voltage and preformed hole diameter on the die clearance and thinning rate in different forming areas were studied. The result shows that in the electromagnetic flanging process, the radial strain of material is beneficial to restrain the thinning of hole wall. With the increasing of discharge voltage, the die clearance of hole wall decreases significantly, but both the die clearance at the die fillet and the maximum thinning rate of material increase. With the increasing of preformed hole diameter, the die clearance of hole wall decreases, and the die clearance at the die fillet and the maximum thinning rate of material increase slightly. The simulation results are verified by the test, and when the discharge voltage and the preformed hole diameter are determined to be 12.75 kV and Φ99 mm, respectively, a normal flanging hole of Φ120 mm with a flanging height of not less than 27 mm can be obtained.

Funds：

国家自然科学基金资助项目（52175304）

王紫旻（1992-），男，硕士，工程师，E-mail：onemoln2o4@163.com；通信作者：于海平（1974-），男，博士，副教授，博士生导师，E-mail：haipingy@hit.edu.cn

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