Transactions of Materials and Heat Treatment

Title：Numerical simulation and experiment of stretch forming for titanium alloy skin

Authors： Ding Shaohang Li Xiaoxing Sun Zhiying Yuan Chao Li Rong Duan Xinmin Shao Tianwei Lang Lihui

Unit： Beihang University Xian Aircraft Industry (Group) Company Limited AVIC Shenyang Liming Aero-engine (Group) Company Limited

KeyWords： titanium alloy skin stretch forming numerical simulation springback

ClassificationCode：

year,vol(issue):pagenumber：2014,39(7):24-29

Abstract：

Stretch forming is a common method for aircraft skin. The numerical simulation of stretch forming of titanium alloy skin was performed by using software Abaques. The better loading trajectory was obtained through orthogonal experiment. The result of simulation under the conditions of better loading trajectory was investigated. The experiment shows that springback is bigger, the part is unqualified and it is essential to take measures to decrease springback. The effect of pre-stretching and added tension on stretch forming of skin was analyzed. And the conclusion that pre-stretching makes stress more well-distributed and added tension can decrease springback was gained. Die-face springback compensation was carried on by using software Think Design. The result of simulation indicates that springback can be controlled within the effective range.

Funds：

工信部国际科技合作资助项目（2010DFA52030）；国家自然科学基金资助项目（1175024）

丁少行（1988-），男，硕士研究生

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