Abstract
In this study, a two dimensional (2-D) plane strain post-necking model was used to predict the size-dependent fracture strain of a dual phase steel with an ultimate tensile strength of 980MPa (DP980). Representative volume elements (RVE) with different sizes are created from the actual microstructural level SEM image of the material. The same simulation mesh size and individual phase properties, including the flow stress and damage parameters for the Johnson-Cook model, are used for the simulations with different RVE sizes. The predicted fracture strain versus RVE size is illustrated, and the associated failure modes for the various RVE sizes are shown and discussed.
| Original language | English |
|---|---|
| Pages | 382-383 |
| Number of pages | 2 |
| State | Published - 2017 |
| Externally published | Yes |
| Event | 14th International Conference on Fracture, ICF 2017 - Rhodes, Greece Duration: Jun 18 2017 → Jun 20 2017 |
Conference
| Conference | 14th International Conference on Fracture, ICF 2017 |
|---|---|
| Country/Territory | Greece |
| City | Rhodes |
| Period | 06/18/17 → 06/20/17 |
Funding
Pacific Northwest National Laboratory (PNNL) is operated by Battelle Memorial Institute for the US Department of Energy (DOE) under Contract no. DE-AC05-76RL01830. This work was funded by the DOE's Vehicle Technologies Office under the Automotive Lightweight Materials Program managed by Ms. Sarah Ollila.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | DE-AC05-76RL01830 |
| Battelle | DE-AC05-76RL01830. |
| Pacific Northwest National Laboratory | |
| Vehicle Technologies Office |