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Direct Shear Test Simulations Using DEM
https://orcid.org/https://orcid.org/0000-0002-1848-3122
This paper provides insights into a series of two-dimensional numerical simulations of the direct shear test using the distinct element method (DEM). The DEM simulations were performed with different inter-particle friction coefficients maintaining the constant normal stress conditions to explore the stress-strain relationships. The microscopic characteristics of the DEM samples and the steady-state properties within the shear band were analysed. From the analysis of results, it can be concluded that the peak stress ratio occurs at a very small global shear strain of approximately 1.5% and it reaches steady state with a relatively larger strain of about 15%. The steady-state and peak friction angles increased with an increase in inter-particle friction coefficient. In addition, all the simulations reported in this paper yielded coordination numbers over 3, indicating structurally stable granular assemblies during any stage.
Direct Shear Test Simulations Using DEM
https://orcid.org/https://orcid.org/0000-0002-1848-3122
This paper provides insights into a series of two-dimensional numerical simulations of the direct shear test using the distinct element method (DEM). The DEM simulations were performed with different inter-particle friction coefficients maintaining the constant normal stress conditions to explore the stress-strain relationships. The microscopic characteristics of the DEM samples and the steady-state properties within the shear band were analysed. From the analysis of results, it can be concluded that the peak stress ratio occurs at a very small global shear strain of approximately 1.5% and it reaches steady state with a relatively larger strain of about 15%. The steady-state and peak friction angles increased with an increase in inter-particle friction coefficient. In addition, all the simulations reported in this paper yielded coordination numbers over 3, indicating structurally stable granular assemblies during any stage.
Direct Shear Test Simulations Using DEM
https://orcid.org/https://orcid.org/0000-0002-1848-3122
This paper provides insights into a series of two-dimensional numerical simulations of the direct shear test using the distinct element method (DEM). The DEM simulations were performed with different inter-particle friction coefficients maintaining the constant normal stress conditions to explore the stress-strain relationships. The microscopic characteristics of the DEM samples and the steady-state properties within the shear band were analysed. From the analysis of results, it can be concluded that the peak stress ratio occurs at a very small global shear strain of approximately 1.5% and it reaches steady state with a relatively larger strain of about 15%. The steady-state and peak friction angles increased with an increase in inter-particle friction coefficient. In addition, all the simulations reported in this paper yielded coordination numbers over 3, indicating structurally stable granular assemblies during any stage.
Direct Shear Test Simulations Using DEM
Lecture Notes in Civil Engineering
Latha Gali, Madhavi (editor) / P., Raghuveer Rao (editor) / Kodicherla, Shiva Prashanth Kumar (author) / Gong, Guobin (author) / Moy, Charles K. S. (author) / Fan, Lei (author) / Kristian, Krabbenhoft (author)
2020-09-19
7 pages
Article/Chapter (Book)
Electronic Resource
English
Direct Shear Test Simulations Using DEM
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