Transactions of Materials and Heat Treatment

Title：Study on experimental method of measuring forming limit diagram in incremental sheet forming

Authors： WANG Jin JIANG Hu-sen TAO Long WANG Bao-ping

Unit： 1.Department of Mechanical Engineering Qingdao Technological University Qingdao 266033 China 2. State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan 430047 China

KeyWords： sheet forming incremental sheet forming forming limit diagram tool path

ClassificationCode：TG302

year,vol(issue):pagenumber：2013,38(2):34-36

Abstract：

Forming limit diagram (FLD) is an effective method to estimate sheet crack in sheet forming. There are obviously differences between the conventional FLD and incremental sheet forming (ISF) FLD. The method of measuring the conventional FLD of sheet has been standardized. But there is inconsistent on measuring the ISF FLD until now. A new experiment method of measuring the ISF FLD was proposed. An arc groove and a cross arc groove on a sheet metal were formed to crack respectively, and major and minor strain at the crack location were measured to establish the ISF FLD. Numerical simulation was employed to learn the strain states in forming the two grooves, and the results show that the new method is feasible. Based on the method, the ISF FLD of an industrial pure aluminum 1060 with the thickness of 0.9 mm was obtained.

Funds：

国家自然科学基金资助项目（51205217）；材料成形与模具技术国家重点实验室开放基金资助项目（2011-P07）；山东省高等学校科技计划资助项目（J10LD13）

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