A remedy to mitigate tensile instability in SPH for simulating large deformation and failure of geomaterials
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913352256585728 |
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| author | Jana, Tapan Pal, Subhankar Shaw, Amit Ramachandra, L. S. |
| author_facet | Jana, Tapan Pal, Subhankar Shaw, Amit Ramachandra, L. S. |
| contents | Large deformation analysis in geomechanics plays an important role in understanding the nature of post-failure flows and hazards associated with landslides under different natural calamities. In this study, a SPH framework is proposed for large deformation and failure analysis of geomaterials. An adaptive B-spline kernel function in combination with a pressure zone approach is proposed to counteract the numerical issues associated with tensile instability. The proposed algorithm is validated using a soil cylinder drop problem, and the results are compared with FEM. Finally, the effectiveness of the proposed algorithm in the successful removal of tensile instability and stress noise is demonstrated using the well-studied slope failure simulation of a cohesive soil vertical cut. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_09654 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A remedy to mitigate tensile instability in SPH for simulating large deformation and failure of geomaterials Jana, Tapan Pal, Subhankar Shaw, Amit Ramachandra, L. S. Computational Engineering, Finance, and Science Large deformation analysis in geomechanics plays an important role in understanding the nature of post-failure flows and hazards associated with landslides under different natural calamities. In this study, a SPH framework is proposed for large deformation and failure analysis of geomaterials. An adaptive B-spline kernel function in combination with a pressure zone approach is proposed to counteract the numerical issues associated with tensile instability. The proposed algorithm is validated using a soil cylinder drop problem, and the results are compared with FEM. Finally, the effectiveness of the proposed algorithm in the successful removal of tensile instability and stress noise is demonstrated using the well-studied slope failure simulation of a cohesive soil vertical cut. |
| title | A remedy to mitigate tensile instability in SPH for simulating large deformation and failure of geomaterials |
| topic | Computational Engineering, Finance, and Science |
| url | https://arxiv.org/abs/2405.09654 |