v6.04.301 SSNV301 - Rotating cylindrical ring subjected to thermal shock and internal pressure — Von Mises (Isotropic work hardening)

Summary:

This nonlinear quasistatic mechanics test \(\mathrm{3D}\) concerns the modeling of a piece of a cylindrical ring and verifies the resumption of a deformation field after a transient linear thermal calculation (thermal shock: application of a heat flow inside the cylindrical ring). Then, the calculation is repeated and the transfer of the thermal deformation field and the use of a follower load (centrifugal force) are checked. Then, the calculation is repeated again by applying internal pressure (change in boundary conditions). The Von Mises criterion is used with isotropic work hardening defined by a function that depends on the temperature.

Comparison with the numerical results of modeling with Samcef V7.0 (module THERNL for calculating the transient temperature field and repeated with module MECANL for nonlinear geometric and material mechanical calculation).

Modeling with \(\mathrm{3D}\) HEXA20 elements and meaxtr6 axisymmetric elements. A fairly fine mesh is used to verify the robustness and performance of Code_Aster.

In the two models A and B, the pressure applied does not follow. The results obtained by SAMCEF are provided with and without follow-on pressure.

In addition, modeling A is used to validate the use of the mechanical residual error indicator “ERME_ELEM” on a 3D model in the presence of rotations.

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