Optimization of Sheet Flanging Forming Based on Kriging Metamodel

Metamodels based on responses from designed (numerical) experiments may form efficient approximations to functions in engineering analysis. They can improve the efficiency of engineering optimization substantially by uncoupling computationally expensive analysis models and (iterative) optimization procedures. This paper investigated the kriging metamodel approach. In order to prove accuracy and efficiency of Kriging method, the nonlinear functions as test functions are implemented. At the same time, the practical nonlinear engineering problems such as sheet flanging forming are also optimized successfully by proposed method. The results prove Kriging model is an effective method for nonlinear engineering problem in practice.