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Johnson–Cook Parameter Identification for Commercially Pure Titanium at Room Temperature under Quasi-Static Strain Rates
| Content Provider | MDPI |
|---|---|
| Author | Siegel, Alice Laporte, Sébastien Sauter-Starace, Fabien |
| Copyright Year | 2021 |
| Description | Background: To simulate mechanical shocks on an intracranial implant called $WIMAGINE^{®}$, Clinatec chose a Johnson–Cook model to account for the viscoplastic behavior of grade 2 titanium in a dynamic study using $Radioss^{©}$. Methods: Thirty tensile specimens were subjected to tensile tests at room temperature, and the influence of the strain rate (8 × $10^{−3}$ and 8 × $10^{−2}$ $s^{−1}$) and sandblasting was analyzed. Relaxations were included in the tests to analyze viscosity phenomena. Results: A whole set of parameters was identified for the elastic and plastic parts. Strain rate influence on stress was negligible at these strain rates. As expected, the sandblasting hardened the material during the tests by decreasing the hardening parameters, while local necking occurred at an earlier strain. Conclusions: This article provides the parameters of a Johnson–Cook model to simulate the elastoplastic behavior of pure titanium (T40, grade 2) in Finite Element Model (FEM) software. |
| Starting Page | 3887 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma14143887 |
| Journal | Materials |
| Issue Number | 14 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-07-12 |
| Access Restriction | Open |
| Subject Keyword | Materials Manufacturing Engineering Grade 2 Commercially Pure Titanium Johnson–cook Plasticity Tensile Test Microstructure |
| Content Type | Text |
| Resource Type | Article |
