v6.02.134 SSNL134 - Elasto-plastic ruin of Lee’s portico

Summary

The purpose of this test is to simultaneously validate the non-linear material and geometric possibilities of the multi-fiber beam element POU_D_TGM. The element is implemented on a test case commonly treated in the literature with regard to elastic behavior because it has a complex response with snap-back and snap-through: it is Lee’s portal.

Here, an elasto-plastic behavior of the gantry is assumed, which makes it possible to test the good integration of the law of behavior of multi-fiber elements but also the correct treatment of large displacements. The results obtained are compared with results from the literature as well as non-regression tests.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Characteristics of the section
  • 1.3. Material properties
  • 1.4. Boundary conditions and loading
• 2. Benchmark solution
  • 2.1. Method used to calculate 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. Characteristics of the cross section mesh
  • 3.4. Tested sizes and results
  • 3.5. notes
• 4. Summary of results
  • 4.1. Comparison with the elastic case
  • 4.2. Synthesis