Optimization of Processing Parameters of Aluminum Alloy Cylindrical Parts Based on Response Surface Method during Hydromechanical Deep Drawing

Aluminum alloy has been proposed as one of the next generation lightweight body structure materials, which is widely used in main components aerospace field. In order to realize efficient and accurate forming aluminum cylindrical parts, response surface method combined with finite element simulation was optimize key processing parameters during hydromechanical deep drawing process. Three friction coefficient, pressure rate, fillet radius die were selected optimization variables, maximum thinning rate parts evaluation index. The Box–Behnken design experiment scheme. A quadratic model between established by analysis software Design Expert for experimental data analysis. optimal parameter combination obtained through this model. results show that conditions can be met when 11.6 MPa/s, coefficient 0.15, 8 mm. Finally, verification carried out using optimized process parameters. It found error predicted within 5%, quality requirements finally formed.