About this Abstract |
Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
Presentation Title |
Hole Expansion Simulation of Steel Sheet Considering Differential Hardening |
Author(s) |
Toshihiko Kuwabara, Shunya Nomura |
On-Site Speaker (Planned) |
Toshihiko Kuwabara |
Abstract Scope |
The deformation behavior of a steel sheet in hole expansion forming (HEF) using a flat-bottomed cylindrical punch has been investigated both experimentally and analytically to investigate the effect of material modeling on the accuracy of the finite element analysis of HEF. The elastic-plastic deformation behavior of a test material is precisely measured using the biaxial tensile test with cruciform specimens and the multiaxial tube expansion test with tubular specimens. Many linear stress paths in the first quadrant of stress space are applied to the specimens to measure the contours of plastic work and the directions of plastic strain rates to determine appropriate material models assuming either isotropic hardening or differential hardening. The accuracy of HEF simulation is improved by using the differential hardening model. |
Proceedings Inclusion? |
Definite: At-meeting proceedings |