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Abstract：
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The cause of folding defect was analyzed according to the simulation result of the complicated extrusion part.In order to improve the flow performance during the forming process and reduce the maximum forming force,a moving least square based on response surface method was proposed to describe the relationship between preform shape and the maximum forming force.With the preform shape geometry parameters being selected as design variables,Taguchi method was used to select the significant factors.The optimization of the preform shape was achieved by using moving least square based on response surface method.The result of the simulation shows that the maximum forming force is reduced by 40%,the flow performance during the forming process is improved,the folding defect is reduced,and the quality of the part is improved.
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Reference：
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