| 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 |
Design of a New Cruciform-like Specimen for Combined Tension and Shear of Metal Sheets |
| Author(s) |
Minki Kim, Jinjin Ha, Yannis P. Korkolis |
| On-Site Speaker (Planned) |
Minki Kim |
| Abstract Scope |
This paper is concerned with design of a new cruciform-like specimen to measure plastic flow under combined tension and shear loading conditions for AA6013-T4 aluminum sheet. The specimen design borrows from the “smiley face”, which is commonly used for the simple shear experiment, but has four arms, as a cruciform specimen: two arms are used to induce shearing, while the other two induce tension. The details of the geometry are optimized by FEA to promote deformation uniformity in the cross section. Experiments are performed using an in-plane biaxial testing machine, with 5 different force ratios between tension and shear, so that combined stress states in (σ<sub>11</sub>, σ<sub>22</sub>, σ<sub>12</sub>) 3D-stress space are probed. Based on the results, the Yld2000-2D anisotropic yield function is calibrated by least-square optimization, and the influence of shear stress on the yield function parameter calibration is evaluated by comparing yield surfaces identified by different calibration approaches. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |