| 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 |
An Extended Ductile Fracture Prediction Model Considering Hydrostatic Stress and Maximum Shear Stress |
| Author(s) |
Zhe Jia, Lei Mu, Ben Guan, Yong Zang |
| On-Site Speaker (Planned) |
Zhe Jia |
| Abstract Scope |
To consider the effect of the second principle stress on the ductile fracture prediction, the Mu-Zang model (uncoupled type), which was originally proposed at ICTP2017, is extended by incorporating with a hydrostatic stress term. An aluminum alloy material (Al 6016-T6) is selected with a series of static ductile fracture tests performed on five different specimen geometries, which can cover a wide range of stress state. A robust simulation-experiment approach is adopted to characterize the correlation between the material’s ductility and distinct stress states. The extended model is then calibrated using least squares optimization. The resulting 3D fracture surface demonstrates acceptable deviations from the tested data, manifesting a promising capability of the extended model to describe the ductility of the considered material within a wide stress state range. In addition, the comparison against other representative ductile fracture models further confirms a good prediction performance of the model proposed. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |