Browse > Article
http://dx.doi.org/10.7467/KSAE.2013.21.3.098

Study on Formability Enhancement of Electromagnetic Forming using Gurson Plasticity Material Model  

Kim, Jeong (Department of Aerospace Engineering, Pusan National University)
Song, Woojin (Industrial Liaison Innovation Center, Pusan National University)
Kang, Beomsoo (Industrial Liaison Innovation Center, Pusan National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.21, no.3, 2013 , pp. 98-104 More about this Journal
Abstract
The effect of the tool-sheet interaction on formability enhancement in electromagnetic forming is investigated using FEM. A free bulging and a conical forming die with 0.7mm AL1050 sheet are used to evaluate damage evolution based on Gurson-Tvergaard-Needleman plasticity material model. The impact between the tool and sheet results in complex stress states including compressive hydrostatic stresses, which leads to a suppression of void growth and restrain ascending void volume fraction of the sheet. Therefore, the damage suppression due to the tool-sheet interaction can be the main factor contributing to the increased formability in the electromagnetic forming process.
Keywords
Electromagnetic forming; Gurson model; Formability; Void volume fraction; Tool-sheet interaction; FEM;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 V. Psyk, D. Risch, B. L. Kinsey, A. E. Tekkaya and M. Kleiner, "Electromagnetic Forming-A Review," Journal of Materials Processing Technology, Vol.211, Issue 5, pp.787-829, 2011.   DOI   ScienceOn
2 H. M. Lee, B. S. Kang and J. Kim, "Development of Sheet Metal Forming Apparatus Using Electromagnetic Lorentz Force," Transactions of Materials Processing, Vol.19, No.1, pp.38-43, 2010.   DOI   ScienceOn
3 J. Imbert and M. Worswick, "Reduction of a Pre-formed Radius in Aluminium Sheet Using Electromagnetic and Conventional Forming," Journal of Materials Processing Technology, Vol.212, Issue 9, pp.1963-1972, 2012.   DOI   ScienceOn
4 D. Liu, C. Li and H. Yu, "Numerical Modeling and Deformation Analysis for Electromagnetically Assisted Deep Drawing of AA 5052 Sheet," Transactions of Nonferrous Metals Society of China, Vol.19, Issue 5, pp.1294-1302, 2009.   DOI   ScienceOn
5 A. L. Gurson, "Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part I," Journal of Engineering Materials & Technology, Vol.99, pp.2-17, 1977.   DOI
6 V. Tvergaard, "Influence of Voids on Shear Band Instabilities under Plane Strain Conditions," International Journal of Fracture, Vol.17, No.4, pp.389-407, 1981.   DOI   ScienceOn
7 M. J. Worswick and P. Pelletiera, "Numerical Simulation of Ductile Fracture during High Strain Rate Deformation," The European Physical Journal Applied Physics, Vol.4, Issue 3, pp.257-267, 1998.   DOI   ScienceOn