管材, 绕弯, 数值模拟, 型槽

In order to overcome the shortcoming that a rotary bend-die can normally bend tubes with only one outer diameter, a new approach that tubes with different outer diameters can be bent on one rotary bend-die was put forwards by adjusting the shape of die groove. Numerical and experimental methods were employed to study the plastic deformation characteristics of tubes with different outer diameters when bent on the die, and effects of different grooves on the shape of tube section and wall thickness within the bending area. It is found that tubes with different outer diameters can be successfully bent on such a rotary bend-die as long as the groove shape of the die is adjusted adequately.

 tube, rotary bending, numerical simulation, groove