| 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 |
Work Hardening and Fracture Strain Measurement of Hardened SKD11 Steel Using Shear Punching Test |
| Author(s) |
Takashi Matsuno, Kouta Nakagiri, Hiroto Shouji, Mitsuru Ohata |
| On-Site Speaker (Planned) |
Takashi Matsuno |
| Abstract Scope |
This study identified the work-hardening parameters and fracture strain of a hardened die-steel (SKD11). Due to the brittle behavior of SKD11 in tensile tests, a shear punching test was used as the low stress-triaxiality suppresses material fracture. Furthermore, a minute punch-die clearance was used to increase the compression stress due to material deformation. SKD11 steel sheets of 1.0 mm thickness were successfully deformed, and the punching force and stroke were recorded for inverse analysis using the finite element analysis (FEA). Subsequently, FEA of the shear punching test was repeated to optimize the parameters of Swift’s work-hardening law. Consequently, the Swift parameters were derived to ensure that the measured values of the punching force and stroke correspond with the numerically simulated curve. The fracture strain was identified as the maximum equivalent plastic strain at the punch stroke of specimen rupture. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |