Transactions of Materials and Heat Treatment

Title：Preforming die optimization design based on response surface methodology

Authors： Zhang Ziwei Ma Xinwu

Unit： Shandong University

KeyWords： die Deform 2D numerical simulation preforming die response surface method

ClassificationCode：TG316

year,vol(issue):pagenumber：2017,42(9):129-134

Abstract：

The shape of preforming die was optimized by response surface method, and a mathematic model was established with the optimization goal of fully filling the cavity and the minimum flash for finished forging. For I-shaped forging, the shapes of preforming die with straight line, arc and curve were designed respectively, and angles of the straight line, radius of arc, and the locations of inflection point of four curves were extracted as the design variables. Then, the forging process with three different preforming dies was simulated by finite element software Deform 2D, and the value of objective function could be obtained based on the calculated data. Furthermore, the relationship between design value and objective function was fit by the curvilinear fitting software 1st Opt, and the curvilinear fitting equation was confirmed. Finally, the optimal solutions of the equation with the optimal angle (41°), optimal radius (109.1 mm) and optimal turning point position (0.3) were obtained. By comparing three optimal shapes of preforming die, Quartic curve type is the best one.

Funds：

华中科技大学模具国家重点实验室开放基金资助项目(20140101)

作者简介：张子伟(1986-)，男，硕士，讲师 E-mail：41872293@qq.com 通讯作者：马新武(1975-)，男，博士，副教授 E-mail: maxinwu@sdu.edu.cn

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