A multi- pumose simulation method for the roll- formign is proposed. The forming pro- cesses of welded pipes are systematically simulated by using the method. The three-dimensional cu rved surfaces of sheet...A multi- pumose simulation method for the roll- formign is proposed. The forming pro- cesses of welded pipes are systematically simulated by using the method. The three-dimensional cu rved surfaces of sheet metals in forming processes are mathema tically expressed by using the shape fonction S(X) which represents flow pattern of each part of sheet metal. Through optimis- ing t e parameter n in s(X), the best approximation of the deformation of sheet metal is derived and the minimum power of deformation is obtained. A mathematical procedure of this analysis is systematically foimulated. The simulation method can be applied to the analysis and simulation for various roll- forming processes of welded pipes observed in commercial production line.展开更多
The roll forming process is applied to the manufacturing of high frequency welded (HFW) pipes,section steels,etc. In this paper,the roll forming process of the HFW pipe is simulated with the finite element method (FEM...The roll forming process is applied to the manufacturing of high frequency welded (HFW) pipes,section steels,etc. In this paper,the roll forming process of the HFW pipe is simulated with the finite element method (FEM). A user-defined material routine of the commercial finite element code ABAQUS/Explicit is developed,and the mixed hardening constitution model is realized through the user-defined material routine. Based on the mixed hardening constitutive equation,the numerical simulation of roll forming process of HFW pipe is performed. The evolutions of equivalent stress and strain are analyzed,and the calculated results are also compared between different hardening models. The results show that the different material hardening models have some important effects on the variation of equivalent stress and strain of strip steel during the simulation of the roll forming process.展开更多
U-ing-O-ing-Expanding （UOE）, the main process for making longitudinal submerged arc welded pipe （LSAW） with steel plate,is famous for its superior quality and reliability. Based on the famous non-linear finite ele...U-ing-O-ing-Expanding （UOE）, the main process for making longitudinal submerged arc welded pipe （LSAW） with steel plate,is famous for its superior quality and reliability. Based on the famous non-linear finite element analysis （FEA） software MSC. Marc, a finite element model （FEM） has been established to simulate the whole UOE forming process by using the secondary development technology with the Python language. Research has also been conducted systematically on the crimping, U-ing, O-ing and mechanical expanding processes. The practice has shown that the simulation calculation is in close conformity with the actual site production data. The FEM has been successfully applied in the UOE production at Baosteel.展开更多
文摘A multi- pumose simulation method for the roll- formign is proposed. The forming pro- cesses of welded pipes are systematically simulated by using the method. The three-dimensional cu rved surfaces of sheet metals in forming processes are mathema tically expressed by using the shape fonction S(X) which represents flow pattern of each part of sheet metal. Through optimis- ing t e parameter n in s(X), the best approximation of the deformation of sheet metal is derived and the minimum power of deformation is obtained. A mathematical procedure of this analysis is systematically foimulated. The simulation method can be applied to the analysis and simulation for various roll- forming processes of welded pipes observed in commercial production line.
基金the National Natural Science Foundation of China (No. 50375095)
文摘The roll forming process is applied to the manufacturing of high frequency welded (HFW) pipes,section steels,etc. In this paper,the roll forming process of the HFW pipe is simulated with the finite element method (FEM). A user-defined material routine of the commercial finite element code ABAQUS/Explicit is developed,and the mixed hardening constitution model is realized through the user-defined material routine. Based on the mixed hardening constitutive equation,the numerical simulation of roll forming process of HFW pipe is performed. The evolutions of equivalent stress and strain are analyzed,and the calculated results are also compared between different hardening models. The results show that the different material hardening models have some important effects on the variation of equivalent stress and strain of strip steel during the simulation of the roll forming process.
文摘U-ing-O-ing-Expanding （UOE）, the main process for making longitudinal submerged arc welded pipe （LSAW） with steel plate,is famous for its superior quality and reliability. Based on the famous non-linear finite element analysis （FEA） software MSC. Marc, a finite element model （FEM） has been established to simulate the whole UOE forming process by using the secondary development technology with the Python language. Research has also been conducted systematically on the crimping, U-ing, O-ing and mechanical expanding processes. The practice has shown that the simulation calculation is in close conformity with the actual site production data. The FEM has been successfully applied in the UOE production at Baosteel.
