| Autor: |
L.D. Kuhns, Dennis Grady, Nancy A. Winfree, L.T. Wilson, G.I. Kerley |
| Rok vydání: |
2000 |
| Předmět: |
|
| Zdroj: |
Le Journal de Physique IV. 10:Pr9-15 |
| ISSN: |
1155-4339 |
| DOI: |
10.1051/jp4:2000903 |
| Popis: |
A phenomenological continuum model for computational use has been developed to describe large amplitude transient wave propagation in heterogeneous multi-component materials. A key feature of the model is a physics-based treatment of the continuum response of microstructural components with markedly dissimilar elasticity and strength properties. A fundamental premise of the modeling effort is reliance solely on widely available dynamic material property data including Hugoniot equation-of-state and Hopkinson pressure bar strength data through either direct application or physically plausible theories. Average nonlinear iso-pressure and iso-strain solutions provide bounding responses of the multi-component material. Compressive deformation under pressure and concomitant dissipation is treated through methods of irreversible phase transformation. The model has been incorporated into a multidimensional Eulerian finite-difference shock physics code and used to examine the response of selected materials to dynamic loads. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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