| 摘要 |
PROBLEM TO BE SOLVED: To provide a springback analysis system for analyzing the amount of springback of a press-formed product by a short-time and accurate simulation. SOLUTION: After a press forming process is analyzed by a finite element method, a material for the press forming is divided into a plurality of regions 1, 2,..., n, which are previously predetermined, based on the result of the analysis. First, by applying the finite element method to a region 1 located at the end of the material, the deformed state of the material in the region 1 at the time, when the material is released from the constraint of a metal mold, is analyzed. Secondly, with respect to an expanded region 1, 2 formed by joining the region 1 and 2, the deformed state of this expanded region at the time, when the material is released from the constraint of a metal mold, is analyzed. Thereafter, with respect to the regions formed successively by joining the regions 1, 2,..., the deformed states of this expanded regions are repeatedly analyzed. Finally, the deformed state of the whole region of the material 1, 2,..., n is analyzed. Thus, the springback analysis is carried out in the springback analysis system for the press formed product. COPYRIGHT: (C)2004,JPO |
