|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Crystal Plasticity Analysis of Plastic Deformation Behavior of a 6022-T4 Aluminum Alloy Sheet under Various Strain Paths
||Takayuki Hama, Shogo Yagi, Yasuhiro Maeda, Yasushi Maeda, Hirohiko Takuda
|On-Site Speaker (Planned)
In this study, biaxial tensile tests were conducted for a 6022-T4 aluminum alloy sheet and the plastic flow upon strain path changes was investigated both experimentally and numerically. Plastic flow described by the associated flow rule with Yld-2000d yield function was used as a reference curve. When the sheet was subjected to linear strain / stress paths, the plastic flow was in fairly good agreement with the reference curve. In contrast, when the sheet was subjected to abrupt strain path changes, the plastic flow deviated from the reference curve right after the abrupt path changes. Thereafter, it tended to saturate to the reference curve as the plastic deformation progressed. These tendencies were predicted qualitatively well by using crystal plasticity analyses. The mechanisms that yield the deviation from the reference curve upon abrupt path changes were investigated based on the simulation results.
||Definite: At-meeting proceedings