The Effect of Lode Angle and Particle Aspect Ratio on Fabric Evolution in Granular Assemblies: A DEM-CFM Approach
Year: 2025
Type: conference-paper
Abstract: This study employs Discrete Element Method (DEM) to pursue two primary objectives: firstly, exploring the influence of anisotropy in terms of initial fabric and induced by variations in applied stress on the undrained response of granular assemblies; secondly, investigating the impact of Lode angle (θ) and particle Aspect Ratio (AR) on fabric evolution under continuous shearing. To achieve this, soil samples with various initial fabric and elongated particles are simulated. A DEM-Coupled Fluid Method (CFM) is used to account for fluid-solid interactions under undrained multi-dimensional conditions. The simulation results underscore the considerable impact of the Lode angle and particle shape on the stress-strain behavior of granular materials. Additionally, the evolution of fabric is mainly influenced by the stress state and particle AR.
Authors: M. Salimi, N. Irani, M. Tafili, T. Wichtmann
Institution: Ruhr University Bochum
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4409317173