Transactions of Materials and Heat Treatment

Title：Study on wall thickness uniformity in incremental forming for aluminum alloy AA5754 sheet

Authors： Gu Yanbo Wang Hui Wang Huiting Jin Kai Guo Xunzhong

Unit： Nanjing University of Aeronautics and Astronautics Nanjing University of Aeronautics and Astronautics Anhui University of Technolgy

KeyWords： incremental forming wall thickness uniformity aluminum alloy AA5754 numerical simulation back pressure

ClassificationCode：TG386

year,vol(issue):pagenumber：2018,43(1):33-41

Abstract：

In order to improve the wall thickness uniformity of incremental forming components for sheet, the incremental forming process of aluminum alloy AA5754 sheet was numerically simulated by finite element simulation software ABAQUS/Explicit. Then, the finite element model suitable for incremental forming was established, and the incremental forming experiment was carried out. Furthermore, the accuracy of model was verified by comparing simulation results and experimental results. Meanwhile, the influences of clamping opening size, forming speed and back pressure on the thickness uniformity of side wall of incremental forming components were analyzed. The results show that the clamping opening size and forming speed have great influence on the wall thickness uniformity of incremental forming components, and the smaller the clamping opening size and the greater the forming speed are, the better the wall thickness uniformity is. In addition, the existence of back pressure is also beneficial to improve the wall thickness uniformity. However, more serious bulging defects are produced when the back pressure is over a certain value.

Funds：

国家自然科学基金资助项目（51275003）；江苏高校优势学科建设工程资助项目；航空科学基金项目（2016ZE52047）

作者简介：谷岩波（1989-），男，硕士研究生，E-mail：guyanbo@nuaa.edu.cn；通讯作者：郭训忠（1981-），男，博士，副教授，E-mail：guoxunzhong@nuaa.edu.cn

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