Abstract
The dynamic stress-strain curves of 93% tungsten (W) alloy in the forged state at strain rates up to 5 000 s and in the temperature range from 223 K to 473 K were measured with the split Hopkinson pressure bar (SHPB) technique. Based on the above experimental data a dynamic constitutive equation considering the effects of strain rate, temperature and the special microstructure of such a kind of W-alloy was proposed. The numerical simulation for the experimental process with this constitutive equation was also carried out, the results show that the constitutive relationship constructed in this paper is very satisfactory for representing the dynamic responsive behavior of material.
| Original language | English |
|---|---|
| Pages (from-to) | 270-273 |
| Number of pages | 4 |
| Journal | Journal of Beijing Institute of Technology (English Edition) |
| Volume | 13 |
| Issue number | 3 |
| Publication status | Published - Sept 2004 |
Keywords
- Constitutive relationship
- Dynamic behavior of material
- High strain rate effect
- Tungsten alloy