v6.02.133 SSNL133 — Elastic post-buckling of an L-structure

Summary:

An L-shaped structure composed of two slender beams of thin rectangular cross section is embedded at one end and subjected to force at the other end. We are looking for post-buckling behavior associated with positive strength values. The area of the test is:

• non-linear elastic mechanics (large displacements, large rotations),

• buckling of beams (instability),

• the models tested are POU_D_TGM, POU_D_T_GD, POU_D_TG,, POU_D_T, POU_D_E and POU_D_EM.

It allows you to test the kinematics in large movements and large rotations activated via the keyword GROT_GDEP.

Note: reference may be made to test case SSLL105 for a determination of the critical buckling loads for this structure.

• 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
  • 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. notes
• 4. B modeling
  • 4.1. Characteristics of modeling
  • 4.2. Characteristics of the mesh
  • 4.3. Characteristics of the cross section mesh
  • 4.4. Tested sizes and results
• 5. C modeling
  • 5.1. Characteristics of modeling
  • 5.2. Characteristics of the mesh
  • 5.3. Characteristics of the cross section mesh
  • 5.4. Tested sizes and results
• 6. D modeling
  • 6.1. Characteristics of modeling
  • 6.2. Characteristics of the mesh
  • 6.3. Characteristics of the cross section mesh
  • 6.4. Tested sizes and results
• 7. E modeling
  • 7.1. Characteristics of modeling
  • 7.2. Characteristics of the mesh
  • 7.3. Characteristics of the cross section mesh
  • 7.4. Tested sizes and results
• 8. F modeling
  • 8.1. Characteristics of modeling
  • 8.2. Characteristics of the mesh
  • 8.3. Characteristics of the cross section mesh
  • 8.4. Tested sizes and results
• 9. Analysis of the results