About this Abstract |
Meeting |
5th International Congress on 3D Materials Science (3DMS 2021)
|
Symposium
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5th International Congress on 3D Materials Science (3DMS 2021)
|
Presentation Title |
A Surface-mesh Gradation Tool for Generating Optimized Tetrahedral Meshes of Microstructures with Defects |
Author(s) |
Brian Phung, Junyan He, Ashley Spear |
On-Site Speaker (Planned) |
Brian Phung |
Abstract Scope |
A meshing tool for generating tetrahedral meshes of polycrystalline microstructures with an optimal element-size distribution, determined by underlying defects (e.g., cracks and voids), is presented. The meshing tool provides users the capability to tune the element-size distribution by specifying parameters such as desired edge lengths and refinement zone radii around defects. Surface meshes can be obtained from 3D image data generated from experiments or tools such as DREAM.3D. Remeshing is performed directly on the original surface mesh via edge splitting and collapsing operations. The modified surface mesh is used in conjunction with a volume mesher to create a gradated volume mesh optimized for the defect(s). Relative to an unmodified uniform mesh, the framework is shown to significantly reduce element count and improve computational efficiency while ensuring sufficient mesh refinement in regions with high gradients. The meshing capabilities are demonstrated with examples involving crack propagation within polycrystalline microstructures. |
Proceedings Inclusion? |
Definite: Other |