Research on Optimization of Cup Forming
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.