v6.04.172 SSNV172 — Monocrystalline viscoplastic behaviors

Summary:

This test makes it possible to validate mono-crystalline behaviors in a uniaxial situation. The geometry processed is a cube, the state of stresses and deformations is homogeneous. In order to best test the laws of behavior, regardless of the definition of sliding systems, a particular, non-physical sliding system is used here, which represents sliding in a single direction. This makes it possible to compare two of the monocrystalline viscoplastic behaviors, (with kinematic work hardening defined by a reminder variable) to the macroscopic viscoplastic behavior of Chaboche.

For other behaviors (in particular KOCKS_RAUCH) we only check the non-regression of the results.

All these tests are carried out in A (3D) modeling.

B modeling makes it possible to validate, again by inter-comparison with Chaboche’s law, monocrystalline behaviors in \(\mathrm{2D}\) (C_ PLAN).

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions and loads
• 2. Benchmark solution
  • 2.1. Calculation method
• 3. Modeling A
  • 3.1. Characteristics of the mesh
  • 3.2. Tested sizes and results
• 4. B modeling
  • 4.1. Characteristics of the mesh
  • 4.2. Tested sizes and results
• 5. Summary of results