Finite element simulation of 3D multi-point roller flexible roll forming of circular tube and effect of different hardening models on forming
A new multi-point roller flexible roll forming process of circular tube with different sizes using the same set of rollers was pro-posed,and finite element simulation of the process was carried out.Because the finite element modeling process needs to assemble a large number of rollers and set related attributes,which is tedious and error-prone,so the pre-processing secondary development of the forming process was carried out in ABAQUS nonlinear finite element software based on Python language.The automatic finite element modeling of roller drawing,material properties,boundary conditions,operations and other properties of circular tube with different forming sizes was realized,which greatly improves the efficiency and accuracy of finite element simulation modeling.Aiming at the process of repeated load-ing,unloading and reloading of materials in circular tube forming process,the circular tube model with different forming process parame-ters was adjusted and generated based on the developed pre-processing plug-in,and the influence of isotropic hardening model and kine-matic hardening model on the simulation of multi-point roller flexible roll forming of circular tube was analyzed.It is found that the simula-tion results of multi-point roller flexible roll forming of circular tube with the kinematic hardening model are more consistent with the objec-tive forming shape.
circular tube formingmulti-point rollerABAQUSsecondary developmenthardening model
万方数据
维普
