Transactions of Materials and Heat Treatment

Title：Research on deformation behavior of creep age forming for 7B04 aluminum alloy stiffened components

Authors： Lv Fenggong Huang Xia Zeng Yuansong

Unit： Beijing Aeronautical Manufacturing Technology Research Institute

KeyWords： 7B04 aluminum alloy creep age forming springback rate numerical simulation

ClassificationCode：TG306

year,vol(issue):pagenumber：2015,40(3):99-103

Abstract：

For the study on the deformation regularity of creep age forming of 7B04T651 aluminium component with stiffeners under elastic preloading, the experiments of creep age forming were operated at 140 ℃/20 h. And the influences of the curvature radius, skin thickness, stiffener width and stiffener height on the component springback rate were analyzed. At the same time, the constitutive equation and finite element model were established, and the forming process was simulated. After that, the springback rates under different conditions were computed. The results show that the springback rate decreases when the skin thickness and the stiffener height increase. The springback rate increases when the curvature radius and the stiffener width increase. The main factors which impact the springback rate are the curvature radius and the stiffener height. The springback rates of experiments are in accordance with that of numerical results, and the correctness of the finite element model is verified.

Funds：

国家自然科学基金资助项目(50975267)

吕凤工（1988-），男，硕士，助理工程师

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