Analysis of Key Process Parameters in Liquid Bulge Forming of Four-Arm Tube and Computer Simulation

Similar theory and orthgonal experiment method are applied to the computer simulation. The liquid bulge forming process of a four-arm tube is analyzed by using the non-linear finite element program, MARC/AutoForge. The computer simulation result gives the effects of main process parameters during the forming process and the optimal process parameters such as balance force, friction, radius of round angle, and rate of velocityare obtained.