TY - GEN
T1 - PREDICTION OF SPRINGBACK IN STRAIGHT FLANGING OPERATION
AU - Cao, Jian
AU - Liu, Zhihong
AU - Liu, Wing Kam
N1 - Funding Information:
This work was supported by Ford Scientific Research Laboratory and National Science Foundation.
Publisher Copyright:
© 1999 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 1999
Y1 - 1999
N2 - A straight flange problem is investigated with the expectation that this will lead to a better understanding of the deformation mechanism and to more complicated flanging problems. The "in-die" shape of the part is subdivided into a number of segments and individual springback of each segment is investigated, by releasing the elastic energy element by element, using the Finite Element Method (FEM). Typical distribution of the springback angle along the blank is obtained and found to be quite different from the widely used constant springback assumption for the curved part of the flange. A new model incorporating a non-uniform moment distribution at the curved part is proposed which reflects the above observation. Explicit analytical formulae are derived and the analytical predictions match with the experimental results very well.
AB - A straight flange problem is investigated with the expectation that this will lead to a better understanding of the deformation mechanism and to more complicated flanging problems. The "in-die" shape of the part is subdivided into a number of segments and individual springback of each segment is investigated, by releasing the elastic energy element by element, using the Finite Element Method (FEM). Typical distribution of the springback angle along the blank is obtained and found to be quite different from the widely used constant springback assumption for the curved part of the flange. A new model incorporating a non-uniform moment distribution at the curved part is proposed which reflects the above observation. Explicit analytical formulae are derived and the analytical predictions match with the experimental results very well.
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U2 - 10.1115/IMECE1999-0757
DO - 10.1115/IMECE1999-0757
M3 - Conference contribution
AN - SCOPUS:85122755345
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 921
EP - 928
BT - Manufacturing Science and Engineering
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 1999 International Mechanical Engineering Congress and Exposition, IMECE 1999
Y2 - 14 November 1999 through 19 November 1999
ER -