Transactions of Materials and Heat Treatment

Title：Compensation optimization on upper roller deflection in super wide symmetrical three-roller roll bending process

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ClassificationCode：TH161

year,vol(issue):pagenumber：2024,49(1):173-181

Abstract：

For the problem of insufficient accuracy of the formed plate caused by the obvious deflection deformation, which because the upper roller of super wide symmetrical three-roller roll bending machine was affected by the reaction force of plate forming force, the force deformation of the upper roller was analyzed, and the 3D dynamic simulation of the roll bending process of the ultra-long aluminum alloy plate was carried out by finite element analysis software ABAQUS. Then, in order to solve the penetration phenomenon between the rigid cylindrical support and the deformable upper roller in simulation, an effective compensation structure was designed and developed, namely, a multi-roller support structure distributed annularly around the upper roller was simplified to a support block. Compared with the traditional two-roller support structure, the multi-roller support structure model had a better effect on reducing the upper roller deflection, which effectively eliminated the penetration phenomenon. Furthermore, the finite element method combined with the response surface method was used to investigate the influence laws of physical parameters for the support block on the deflection compensation of the upper roller. The results show that the maximum deflection of the upper roller decreases with the increasing of the number, length and width of the support block. And the optimal parameter combination of the support block was designed based on the optimization objective.

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作者简介：张芷娟(1999-)，女，硕士研究生 E-mail：18651881501@163.com 通信作者：鲁世红(1964-)，女，博士，教授 E-mail：lush@nuaa.edu.cn

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