Transactions of Materials and Heat Treatment

Title：Design on stretch-roll flattening process for stiffened cylindrical parts based on finite element simulation

Authors： Han Jinquan1 Wang Shaohua2

Unit： 1.School of Mechanical Engineering ＆ Automation Beihang University 2.Beijing Institute of Aerial Materials

KeyWords： flattening constitutive model rolling plasticity deformation 1561 aluminum magnesium alloy

ClassificationCode：TG306

year,vol(issue):pagenumber：2021,46(12):36-45

Abstract：

For the design of the leveling and flattening processes for 1561 aluminum magnesium alloy stiffened cylindrical part, an process scheme combining flattening and rolling was proposed. Then, the uniaxial tensile test data were fitted based on Voce and Swift constitutive models, and the Voce constitutive model with higher accuracy was selected to supplement the material data, so as to obtain higher simulation accuracy. Furthermore, the finite element model of stiffened cylindrical part was established, the flattening process parameters were designed, three rolling schemes and an improved rolling scheme were proposed, the overall flattening scheme was designed, and the deformation of part for each process in the above flattening processes was simulated by finite element method. The results show that the part reached a relatively flat condition after flattening deformation, and the improved rolling scheme greatly reduces the height difference of web plane fluctuation. At the same time, the comprehensive rolling effect of web and rib positions is investigated, and the flattening process further reduces the maximum error value of web flatness.

Funds：

GF基础科研项目

韩金全（1980-），男，博士，讲师 E-mail：hanjinquan@buaa.edu.cn

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