Loading...
Please wait, while we are loading the content...
Similar Documents
A modified Johnson-Cook model for dynamic behavior of spray-deposition 17 vol.% SiCp/7055Al composites at high strain rates
| Content Provider | Scilit |
|---|---|
| Author | Tang, Binbin Wang, Haitao Jin, Peipeng Jiang, Xianquan |
| Copyright Year | 2020 |
| Description | Journal: Materials Research Express In this study, the dynamic impact tests of spray-deposited 17 vol% SiCp/7055Al composites at various strain rates were performed with a Split Hopkinson Pressure Bar (SHPB). In these tests, the strain rate was 392 $s^{−1}$–2002 $s^{−1}$, and the temperature was 293 K–623 K. Subsequently, the Johnson-Cook (JC) was used to describe the flow behaviors under high speed impact deformation, and its effectiveness was assessed. Results show that the stress values predicted by the JC model could be inconsistent with the experimental ones. A modified JC constitutive model of 17 vol% SiCp/7055Al composites was developed by modifying the strain rate hardening term and considering coupling effects of strain, temperature and strain rate. According to the comparison between the experimental data and the results assessed with the modified JC model, the proposed model could assess the stress-strain values more accurately, especially in the beginning of plastic deformation. This indicates that the composites exert the joint effects of strain rate hardening and temperature softening during high-speed impact deformation. |
| Related Links | https://iopscience.iop.org/article/10.1088/2053-1591/ab8fe9/pdf |
| ISSN | 20531591 |
| e-ISSN | 20531591 |
| DOI | 10.1088/2053-1591/ab8fe9 |
| Journal | Materials Research Express |
| Issue Number | 5 |
| Volume Number | 7 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2020-05-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Materials Research Express Coatings and Films |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics |
