v6.03.116 SSNP116 - Creep/crack coupling - Uniaxial traction

Summary:

This validation case is intended to verify the coupling model of Granger creep laws with plasticity/cracking laws. The coupling, initially restricted to a few laws of the non-linear environment of Code_Aster, can be extended later to more laws. The parameters of the plasticity/cracking models are chosen in a particular way to model an almost perfect elasto-plastic behavior, and to reduce to a problem presenting a relatively simple analytical solution.

The geometry consists of three linear elements (cubes and prisms in \(\mathrm{3D}\), squares and triangles in \(\mathrm{2D}\)), and three quadratic elements, connected to the previous ones by linear relationships. The models tested here are the 3D models, C_ PLAN, and D_ PLAN.

The load is uniaxial traction in imposed displacement.

The coupling of the Granger creep model with BETON_DOUBLE_DP and VMIS_ISOT_LINE is tested. The analytical solution is available in 3D and C_ PLAN, when there is no change in the water content.

In the 3D and D_ PLAN cases, the solutions obtained are also tested when there is a variation in the water content and in the temperature with activation of the corresponding withdrawals (with opposite sign). These are then non-regression tests.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions and mechanical loads
• 2. Benchmark solution
  • 2.1. Calculation method used for the reference solution
  • 2.2. Calculation of the reference solution
  • 2.3. Uncertainty about the solution
  • 2.4. Bibliographical references
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
  • 3.4. Calculation with law VMIS_ISOT_LINE in non-isothermal
• 4. B modeling
  • 4.1. Characteristics of modeling
  • 4.2. Characteristics of the mesh
  • 4.3. Tested features
• 5. Summary of results