Flow Forming of Tubes: Modeling and Optimization Using RSM, Composite Desirability Function, and TLBO

Modeling of backward flow forming process is attempted in this study using response surface method. Three inputs such as infeed, feed speed ratio, and axial stagger and three responses, such as spring-back, inside diameter of flow-formed tube and ovality of the inside diameter, are considered in this study. Multi-objective optimization technique was done using composite desirability function and TLBO to attain an optimum combination of input parameters. TLBO was found to be more accurate as compared to composite desirability function.