基于数值模拟和响应面法的级进模成形优化

发布时间：2018-05-26 12:02

本文选题：级进模成形 + 全工序有限元模型　；参考：《中南大学学报(自然科学版)》2015年01期

【摘要】：针对级进模成形件存在的起皱、破裂和成形精度低等质量缺陷,以某阀门支架零件为研究对象,采用多工步多工序的建模方法建立级进模成形全工序有限元模型。该模型可继承已成形工步的变形、应力等信息,并能够分析相邻工步变形的相互影响。以最大减薄率、最大增厚率和导正孔移动量作为优化目标,以压边力、摩擦因数、凸凹模间隙为设计变量,给出一种用于控制优化级进模成形件质量的数学模型;结合响应面法将此优化模型用于该阀门支架零件级进模成形参数的优化,得到质量缺陷最小化的成形参数组合。研究结果表明:采用该方法所得数值模拟结果与实际生产试制结果相吻合,无起皱和破裂缺陷,表明该优化方法是可行的,可有效指导级进模成形零件的产品质量控制。
[Abstract]:Aiming at the quality defects of progressive die forming parts, such as wrinkling, cracking and low forming precision, the finite element model of the whole process of progressive die forming is established by using the modeling method of multi-step and multi-working procedure, taking the part of a valve support as the research object. The model can inherit the information of deformation and stress of formed step, and can analyze the interaction of adjacent step deformation. Taking the maximum thinning rate, the maximum thickening rate and the moving quantity of the guide hole as the optimization targets, taking the blank holder force, friction coefficient and the clearance of the convex and concave die as the design variables, a mathematical model for controlling the quality of the forming parts of the progressive die is presented. Based on the response surface method, the optimization model is used to optimize the progressive die forming parameters of the valve support parts, and the forming parameter combination of quality defect minimization is obtained. The results show that the numerical simulation results obtained by this method are in good agreement with the actual production results without wrinkling and cracking defects. The results show that the optimization method is feasible and can effectively guide the product quality control of progressive die forming parts.
【作者单位】：重庆大学材料科学与工程学院;格力电器(重庆)有限公司;
【基金】：国家自然科学基金资助项目(51005258)~~
【分类号】：TG306

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