A remedy to mitigate tensile instability in SPH for simulating large deformation and failure of geomaterials

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 ad...

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Bibliographic Details
Published inarXiv.org
Main Authors Jana, Tapan, Pal, Subhankar, Shaw, Amit, Ramachandra, L S
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 15.05.2024
Subjects
Algorithms
Cohesive soils
Computer Science - Computational Engineering, Finance, and Science
Deformation analysis
Failure analysis
Geomaterials
Geomechanics
Kernel functions
Landslides
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2405.09654