Transactions of Materials and Heat Treatment

Title：Experiment and numerical simulation research on numerical-controlled bending for 5B02 aluminum alloy tubes

Authors： Bai Xueshan1 Li Xuegang2 Li Xiaoqiang2 Zhang Xingmin1

Unit： 1.Shenyang Aircraft Industry (group) Co. Ltd. 2.Beihang University

KeyWords： aluminum alloy 5B02 bending thickness finite element simulation

ClassificationCode：

year,vol(issue):pagenumber：2015,40(7):68-72

Abstract：

Tubes have been widely applied in hydraulic, fuel, environmental control and oxygen supply system. Wrinkle, rupture and springback can frequently appear in the process of bending. Focusing on these problems, the 5B02 aluminum alloy tubes with diameters of Φ30, Φ50, Φ70 mm were bended on the numerical-controlled bending machine. Then, inner and outer crest thicknesses of the formed tubes were measured by the ultrasonic thickness gage. A numerical model of this bending process was established by PAM-STAMP software, the prediction on the thickness distribution of the formed tubes was carried out. By comparing the experiment results with the simulation results, the thickness distribution can be accurately predicted by the finite element model. The maximum relative error of the inner crest thickness distribution is no more than 9.34%, and the maximum relative error of the outer crest thickness distribution is no more than 4.88%. The results are within the acceptable error range and can be guidance in tube manufacture.

Funds：

部门预先研究资助项目（513180102）

白雪山（1981-），男，学士，工程师

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