TY - GEN
T1 - Comparison of fine and conventional blanking based on ductile fracture criteria
AU - Biglari, Fand R.
AU - Kermani, Amir Tavakoli
AU - Parsa, Mohammad Habibi
AU - Nikbin, Kamran M.
AU - O'Dowd, Noel P.
PY - 2004
Y1 - 2004
N2 - A comparison between fine and conventional blanking is carried out in this paper. In the fine blanking process, V-ring indentation is applied to create hydrostatic pressure and prevent premature fracture in an undesired direction. Furthermore, a small clearance between the punch and die is employed along with a counterforce punch that causes concentrated strain in the sheared band region. A fracture mechanics oriented finite element procedure has been employed in this research work in order to obtain the fracture path. The fracture path is found according to the stress and strain histories which are calculated in each element. The numerical results have shown that the sheared edge quality in the blanking process is strongly influenced by the fracture path. In fine blanking, there are various parameters affecting the sheared edge quality and dimensional accuracy. The finite element calculation is carried out for an axisymmetric model. The commercial finite element code ABAQUS V6.2 is employed along with a controlling program that is written in Visual BASIC.
AB - A comparison between fine and conventional blanking is carried out in this paper. In the fine blanking process, V-ring indentation is applied to create hydrostatic pressure and prevent premature fracture in an undesired direction. Furthermore, a small clearance between the punch and die is employed along with a counterforce punch that causes concentrated strain in the sheared band region. A fracture mechanics oriented finite element procedure has been employed in this research work in order to obtain the fracture path. The fracture path is found according to the stress and strain histories which are calculated in each element. The numerical results have shown that the sheared edge quality in the blanking process is strongly influenced by the fracture path. In fine blanking, there are various parameters affecting the sheared edge quality and dimensional accuracy. The finite element calculation is carried out for an axisymmetric model. The commercial finite element code ABAQUS V6.2 is employed along with a controlling program that is written in Visual BASIC.
UR - http://www.scopus.com/inward/record.url?scp=8844256313&partnerID=8YFLogxK
U2 - 10.1115/esda2004-58117
DO - 10.1115/esda2004-58117
M3 - Conference contribution
AN - SCOPUS:8844256313
SN - 0791841731
SN - 9780791841730
T3 - Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004
SP - 265
EP - 270
BT - Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2004
PB - American Society of Mechanical Engineers
T2 - Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis - 2004
Y2 - 19 July 2004 through 22 July 2004
ER -