摘要
使用3参数Barlat-Lian屈服准则,通过有限元软件模拟杯形件的拉深成形,获得压边力、凹模圆角半径参数与破裂、起皱、厚度最大变薄率之间关系的数据;通过多元非线性回归处理,分别建立压边力、凹模圆角半径参数与破裂、起皱、最大变薄率的目标函数模型。进一步运用层次分析法求出各目标函数的权重,将多目标函数转化为单目标优化的数学模型,求出成形工艺的参数优化解。最后通过模拟和实验验证杯形件的成形,证明了该方法的可行性。
Based on the three-parameter Barlat-Lian yield criteria, the cup forming was simulated by using finite element software, and the data of cracking, wrinkling and thinning was acquired by designing binder force, die radius. By means of multivariate nonlinear regressing, the mathematical models between the process parameters and the objective qualities were built. The multivariate nonlinear objective model was transformed into single objective model by using analytic hierarchy process to calculate the function weighting, then the mathematical model was optimized and the optimized process values were finally obtained. Finally, the cup was formed basing on the optimized result and the experiment conclusion showed that the result was available.
出处
《热加工工艺》
CSCD
北大核心
2008年第21期70-73,共4页
Hot Working Technology
基金
安徽省教育厅自然科学基金资助项目(KJ2007B189)
关键词
数值模拟
杯形件
多元非线性回归
层次分析法
单目标优化
numerical simulation
cup
multivariate nonlinear regressing
analytic hierarchy process
single objective optimization
