07 January 2024 0 5K Report

I am currently engaged in a project where I aim to simulate a triaxial compression test (CD test) on sand using the Abaqus finite element software. My goal is to accurately model the behavior of sand under these test conditions. However, I am seeking guidance on a couple of critical aspects of this simulation:

  • Constitutive Laws for Sand Behavior: What are the most appropriate constitutive models to accurately represent the mechanical behavior of sand in a triaxial CD test within Abaqus? I am interested in models that can effectively capture the essential aspects such as stress-strain behavior, dilatancy, and failure characteristics of sand.
  • Parameter Determination: Once the constitutive model is selected, what parameters are crucial for this type of simulation, and how can they be determined accurately? I am looking for insights on parameters like modulus of elasticity, Poisson’s ratio, angle of internal friction, cohesion, etc., and methodologies or experimental data required for their determination.

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