Transactions of Materials and Heat Treatment

Title：Numerical simulation and experimental research of stretch-bending process for typical aluminum alloy parts

Authors： Du Jianning1 2 Li Xiaoqiang1 Gao Yan2

Unit： 1.Beihang University 2. Shenyang Aircraft Corporation

KeyWords： stretch-bending wrinkling fracture springback

ClassificationCode：

year,vol(issue):pagenumber：2015,40(4):148-151

Abstract：

For the problems of wrinkling, fracture and springback in the stretch bending process of profile, tests and analysis of formed 2B06 aluminum alloy profile parts were conducted. The stretch bending process was simulated by ABAQUS software. The areas prone to wrinkling and fracture during forming process were predicted, and the accuracy of simulating springback process was verified. The research results show that the tangential stress on the rounded corner of the parts is bigger during forming process，which is a dangerous area of forming part to cause thinning and fracture easily. The tangential stress outside the rounder corner of part is three times that of the inner，and results in springback. By comparison of the springback, it can be seen that the numerical simulation result agrees well with the experimental result as a whole. Therefore, the numerical simulation of stretch bending process for aluminium alloy profile can prevent from the forming defects in practical production effectively.

Funds：

国家自然科学基金资助项目（50905008）；解放军总装备部预先研究项目（513180102）

杜建宁（1975-），男，本科，高级工程师

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