In this paper, a finite element analysis model is proposed to simulate a chipless forming process based on flow forming. In the analysis model two artificial planes of symmetry are employed to define the analysis domain for saving computational time. The prediction of the proposed analysis model are compared with experiments in terms of deformed shape. Thd comparison shows that the predicted geometries in the planes of symmetry are a little different from the experimental geometries but that those in the mid-plane are quite to the contrary.