关键词: 材料合成与加工工艺, 可弯曲辊, 卷板成形, 有限元分析, 数值模拟, 压下量, 纵向曲率

Abstract:

The technology of bending by bendable roller(BBBR) was introduced briefly. A finite element model of the process of BBBR was built by the general finite element program. The spherical part was numerically simulated and distributions of the stress and the strain were obtained. The impact of the press displacement of the upper roller on the forming process of BBBR was studied and it was concluded that the lengthways curvature of the spherical part is very sensitive to the press displacement under fixed distance between two lower rollers. The effeet of friction condition on the forming process of BBBR was discussed. The springback behavior of the process was analyzed preliminarily. The simulated results were validated by experiments. The obtained achievements were useful for the optimal design of BBBR equipments and the practical sheet forming process study in general.

Key words: material synthesis and processing tehnology, bendable roller, bending, finite element analysis, numerical simulation, press displacement, lengthways curvature