v6.04.221 SSNV221 — Hydrostatic test with DRUCK_PRAGER linear and parabolic behavior

Summary:

The test case proposes a purely hydrostatic loading for the associated Drücker-Prager law [R7.01.16]. The formulation of this plastic law, often used for soils, is based on both the deviatoric and hydrostatic parts; however, the criterion surface is unique for a state of purely hydrostatic stress. This analytical test case is used to verify the correct work-hardening in this particular case.

The test is performed on a hardware point with the SIMU_POINT_MAT command. We work with imposed deformations.

One test is carried out with linear hardening (modeling A) and another with parabolic hardening (modeling B).

• 1. Reference problem
  • 1.1. Material properties
  • 1.2. Loads and boundary conditions
  • 1.3. Initial conditions
• 2. Benchmark solution
  • 2.1. Calculation method
  • 2.2. Reference quantities and results
  • 2.3. Uncertainty about the solution
  • 2.4. Bibliographical references
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Reference quantities and results
• 4. B modeling
  • 4.1. Characteristics of modeling
  • 4.2. Reference quantities and results
• 5. Summary of results