3D-FE Modeling and Simulation of Rotary-draw Bending Process of Thin-walled Rectangular Tube
According to the characteristics of rotary-draw bending process of thin-walled rectangular tube，a 3D-FE model of rotary-draw bending process of thin-walled rectangular tube is built under the ABAQUS/ Explicit environment based on the solution of several key techniques, such as contact boundary condition treating, material properties definition and meshing technology, etc. The actions of pressure die, wiper die, clamp die and mandrel are considered in the modeling process. Then the reliability of the model is validated by experiments in the literature. Furthermore, numerical simulation and analysis of the rotary-draw bending process of 3A21 aluminum alloy thin-walled rectangular tube have been carried out by using the model. The distribution laws of tangential stress in the process have been analyzed. The results show that the maximum tangential stress increases sharply in the initial stage and then keeps nearly constant with the progress of the bending process. The area of circumferential compressive stress is basically unchanged when the bending process becomes stable. The achievements of this study may provide a theoretical base for predicting and controlling of forming defects during the rotary-draw bending process of thin-walled rectangular tube.
thin-walled rectangular tube rotary draw bending modeling numerical simulation
Gangyao ZHAO Yuli LIU He YANG Caihong LU Ruijie GU
College of Materials Science and Engineering, Northwestern Polytechnical University, P.O.Box 542, Xian 710072, PR China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）