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

fYear

2010

fDate

26-28 June 2010

Firstpage

466

Lastpage

469

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-7737-1

Type

conf

DOI

10.1109/MACE.2010.5536409

Filename

5536409