Transactions of Materials and Heat Treatment

Title：Research on critical angle of uniform wall thickness in incremental forming with outer contour support for convex curved part of 1060 aluminum sheet

Authors： Shi Wenqiang Gao Jinzhang

Unit： Southeast University

KeyWords： 1060 aluminium sheet convex curved part incremental forming uniform wall thickness critical forming angle

ClassificationCode：TG379.6

year,vol(issue):pagenumber：2019,44(9):27-32

Abstract：

The critical angle of uniform wall thickness in the incremental forming with outer contour support for convex curved part of 1060 aluminum sheet was studied by finite element software ANSYS/LS-DYNA, and its finite element model was constructed. Then, the critical forming angle θ均匀 of uniform wall thickness for convex curved part in incremental forming with outer contour support was researched by numerical simulation method, the physical experiment was carried out, and the experimental results verified the credibility of the simulation results. Furthermore, the influences of sheet thickness, tool head diameter and axial feeding on θ均匀 were analyzed. The results show that the θ均匀 increases gradually with the increasing of the sheet thickness and decreases with the increasing of the tool head diameter, and the axial feeding has little effect on θ均匀. At the same time, the wall thickness distributions of large-angle convex curved part were compared by different forming methods of single-pass, two-pass, three-pass up-bottom and three-pass bottom-up. The results find that the three-pass bottom-up method obtains the convex curved part with more uniform wall thickness.

Funds：

先进数控技术江苏省高校重点建设实验室开放基金项目（KXJ05017）

施文强（1996-），男，硕士研究生 E-mail：1468256885@qq.com 通讯作者：高锦张（1963-），男，硕士，副教授 E-mail:drd.0412@aliyun.com

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