| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
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| Symposium
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Materials for Sustainable Hydrogen Energy
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| Presentation Title |
NUMERICAL MODELING OF CAVITY GROWTH RESULTING FROM RAPID GAS DECOMPRESSION :
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| Author(s) |
Azdine Nait-Ali, Sylvie Castagnet, Jérôme Colin |
| On-Site Speaker (Planned) |
Azdine Nait-Ali |
| Abstract Scope |
Polymer materials are now used as seals in hydrogen storage systems. Understanding the damage mechanisms of these materials under repeated decompression in hydrogen is therefore of fundamental interest. A challenging problem with these materials is characterizing the evolution of cavity/matrix interfaces. We develop numerical tools to model the morphological evolution cavity within a polymeric matrix. The phase field method is well-suited for studying 2D interfaces. In literature, mechanical calculations considering cavitation are typically performed at the cavity scale rather than on a field of cavities. This limitation arises from the difficulty in handling large data sizes and the high computational cost associated with mesh generation, particularly in finite element cases. Moreover, matrix/cavity interface effects, such as surface tension, are often neglected. Therefore, to model cavity evolution by solving a gas diffusion problem, simulations will use a phase field method to better account for gas exchanges across the cavity wall. |
| Proceedings Inclusion? |
Planned: |