| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
Numerical Analysis of Spalling at Micro and Continuum Scales |
| Author(s) |
Andrew Ruggiero, Nicola Bonora, Gianluca Iannitti, Sara Ricci, Gabriel Testa, Guido Zucca |
| On-Site Speaker (Planned) |
Andrew Ruggiero |
| Abstract Scope |
In ductile metals, spalling is the result of the voids nucleation and growth process, driven by an intense tensile stress pulse. Because of the high triaxial stress state, the macroscopic strain developed is limited. However, the presence of the voids causes a local lowering of the stress triaxiality that allows them to grow. The process, assisted by thermal softening, is associated with the development of large strain around the voids.
In this paper, the process described was analyzed numerically, by finite element method, at two different scales. A micromechanical model was employed to examine the local strain evolution up to failure and to evaluate the homogenized mechanical response of the damaged material. Based on this response, at the continuum scale, the behavior of the degraded material was described with a damage model developed in the context of Continuum Damage Mechanics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Other, |