Abstract
Granular materials such as sand depict different macro- and micro-mechanical responses when they are subjected to different stress paths. This study considers four different stress paths such as triaxial compression, plane strain compression, mean stress compression, and axial extension to simulate and study the macro- and micro-mechanical behavior of granular materials using DEM. To simulate the behavior of granular materials under the stated stress paths, an identical initial sample having the same internal configuration prior to shear has been considered. The initial sample has been generated randomly in a cube without any contact and compressed isotropically to get the three-dimensional (3D) dense sample. Simulation of macro-mechanical behavior has been carried out under different stress paths using the periodic boundary. The simulated results depict excellent qualitative agreement with the macro-mechanical responses for different stress paths. Micro-mechanical parameters such as the average coordination number, slip coordination number, and contact fabric have been quantified, and the relationship between macro–micro quantities has been established.
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Sazzad, M.M., Azad, M.S., Ghosh, A. (2022). Macro- and Micro-mechanical Responses of Granular Materials Under Different Stress Paths Using DEM. In: Arthur, S., Saitoh, M., Pal, S.K. (eds) Advances in Civil Engineering. Lecture Notes in Civil Engineering, vol 184. Springer, Singapore. https://doi.org/10.1007/978-981-16-5547-0_9
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