Abstract: In this paper, a fast simulation scheme for 3D curve binderflanging and blank shape prediction for sheet metal based on one-step inversefinite element method is proposed, in which the total deformation plasticity theory andproportional loading assumption are used. The scheme can be actually used tosimulate 3D flanging with complex curve binder shape, and suitable forsimulating any type of flanging model by numerically determining the flangingheight and flanging lines. Two typical 3D curve binder flangingprocesses includingstretch and shrink characters are simulated at the same time by using thepresent scheme and incremental FE non-inverse algorithm based on incrementalplasticity theory, which show the validity and high efficiency of thepresent scheme.