Transactions of Materials and Heat Treatment

Title：Structure optimization and experimental verification on integral stiffened panel in roll bending process

Authors： Gao Yang Gong Xiong Hu Lan Lei Xiangheng

Unit： Shanghai Aerospace Equipment Manufacturing Plant

KeyWords： integral stiffened panel rollbending finite element model structure optimization straightness

ClassificationCode：V46

year,vol(issue):pagenumber：2017,42(6):66-69

Abstract：

For the problem of 3-4 mm straightness of the integral stiffened panel after rollbending process in the new generation launch vehicle tank, a finite element model of the integral stiffened panel after rollbending process was established, and the loading features of the integral stiffened panel were analyzed. However, during the rollbending process, the forces acting on the lower, middle and upper areas are distributed unevenly, and the elongation difference of the formed panel is 6 mm, which are the main cause of poor straightness. Then, the integral stiffened panel of the structure optimization along the altitude direction margin area was designed. Furthermore, the optimized structure of the integral stiffened panel was analyzed by the finite element method, and the stress levels from various rollbending areas are closely aligned. Finally, the rollbending test of the integral stiffened panel after structural optimization was carried out, and the straightness is within 1.5 mm.

Funds：

2016智能制造专项

郜阳（1987-），男，硕士，工程师

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