Title :
Improved numerical constraint disposal method for process conditions in sheet metal forming simulation
Author :
Ting Du ; Xie, Shaohui ; Zhang, Zhibing ; Liu, Yuqi
Author_Institution :
State Key Lab. of Mater. Process. & Die & Mould Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
The constraint force generated by process conditions, such as drawbead resistance and boundary friction are generally considered as positive force in dynamic explicit finite element method, which actually are not in accord with realistic effect. A constraint disposal method for constraint force in sheet metal forming simulation was proposed using linear spring element to build more accurate numerical model of process conditions such as blank-holding force, drawbead resistance and boundary friction, to represent the passive and synchronous effect of constraint force. Drawing process of an underbody cross member panel was simulated. The prediction of thickness strain distribution was shown to be in very good agreement with experimental result.
Keywords :
finite element analysis; forming processes; sheet metal processing; blank-holding force; boundary friction; drawbead resistance; finite element method; linear spring element; numerical constraint disposal method; process conditions; sheet metal forming simulation; thickness strain distribution; underbody cross member panel; Automotive components; Equations; Finite element methods; Friction; Lubricants; Materials science and technology; Numerical simulation; Shape; Springs; Vehicle dynamics; Constraint Treatment; Linear Spring Element; Numerical Simulation; Process Parameters; Sheet Metal Forming;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7737-1
DOI :
10.1109/MACE.2010.5536409
