v6.05.501 SSNS501 - Large movements of a simply supported cylindrical panel

Summary:

This test represents a calculation of the stability of a simply supported cylindrical panel subjected to an effort concentrated at its center. The behavior of the panel changes completely and clearly shows « snap-through/snap-back » charging and moving return points. In this case, control in displacement diverges and control in arc length must be chosen.

It makes it possible to validate finite element modeling COQUE_3D with cells TRIA7 and QUAD9 and DKT with cells TRIA3 in the semi-static non-linear geometric domain in the presence of strong instabilities.

The movements and the critical load are compared to a numerical reference solution.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions and loads
  • 1.4. Initial conditions
• 2. Benchmark solution
  • 2.1. Calculation method used for the reference solution
  • 2.2. Benchmark results
  • 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 values
  • 3.4. notes
• 4. B modeling
  • 4.1. Characteristics of modeling
  • 4.2. Characteristics of the mesh
  • 4.3. Tested values
  • 4.4. notes
• 5. C modeling
  • 5.1. Characteristics of modeling
  • 5.2. Characteristics of the mesh
  • 5.3. Tested values
  • 5.4. notes
• 6. Summary of results