Transactions of Materials and Heat Treatment

Title：Finite element simulation and experiment study on formability of hydro-forming for aluminum alloy square tube

Authors： Lu Hong Tian Shiwei Huang Wen Liu Qingguo Zhang Lu Zhao Litao

Unit： Yanshan University China Electronics Technology Group Corporation

KeyWords： tube hydroforming forming limit aluminum alloy tube S-R theory FEM simulation

ClassificationCode：TG315.4

year,vol(issue):pagenumber：2018,43(7):153-158

Abstract：

The deformation of tube hydro-forming is complex, and it is difficult to determine the optimum loading path before production. Therefore, the hydro-forming of aluminum alloy A6063 square tube was studied, and the optimum loading path improving the formability was explored. Then, the tube hydro-forming process was simulated by software ABAQUS EXPLICIT, and the axial and circumferential strains were analyzed. Furthermore, assuming the tube under the plane stress state during the hydro-forming process, the formability of tube hydro-forming under different strain paths was evaluated by the FLD obtained from the S-R theory, and the optimal loading path was determined on this basis. Finally, the experiments of tube hydro-forming were conducted by aluminum alloy A6063 tubes with diameter of Φ40 mm and thickness of 2 mm to validate the validity of theoretical results, and the experiment results are in agreement with the theoretical prediction.

Funds：

国家自然科学基金资助项目(51675466)；河北省科技计划项目（15211820）

陆宏(1962-)，女，博士，副教授，E-mail：honglu@ysu.edu.cn

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