v5.02.113 SDNL113 - Lyre-shaped pipe (ELSA tests) under seismic loading

Summary:

The aim of this test case is to test the results of a structure, composed of pipes (straight or bent), rods and valves, subjected to seismic loading and whose non-linearity comes from the material behavior in the elbows.

To do this, a direct non-linear transient analysis is carried out on the structure, in particular using modeling TUYAU_3M. The displacements, the nodal reactions and the cumulative plastic deformation at certain points of the structure are then tested.

In order to limit the calculation time, while having plasticity quite early during the transition, the elastic limit values are divided by two.

This test also contributes to the validation of option MOMENT_EQUIVALENT of POST_RCCM /B3600.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Elastic properties of materials
  • 1.3. Boundary conditions and loads
  • 1.4. Initial conditions and list of calculation times
• 2. Benchmark solution
  • 2.1. Reference calculation
  • 2.2. Reference sizes
  • 2.3. Benchmark results
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Tested sizes
• 4. Summary of results