v2.02.014 SDLL14 - Vibration modes of a thin pipe elbow

Summary:

This test consists in looking for the natural frequencies and the associated vibration modes of an angled pipe. It makes it possible to validate finite element models TUYAU (SEG3 and SEG4) and TUYAU_6M (SEG4).

It also validates the option of calculating the largest natural frequencies of a structure. The results obtained are compared with an analytical reference solution.

In addition, it validates finite element models POU_D_T by comparing the results obtained with the reference results found in reference [1] as well as those obtained by the Pipestress software.

• 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. Bibliographical references
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
• 4. B modeling
  • 4.1. Characteristics of modeling
  • 4.2. Characteristics of the mesh
  • 4.3. Tested sizes and results
• 5. C modeling
  • 5.1. Characteristics of modeling
  • 5.2. Characteristics of the mesh
  • 5.3. Tested sizes and results
  • 5.4. notes
• 6. D modeling
  • 6.1. Characteristics of modeling
  • 6.2. Characteristics of the mesh
  • 6.3. Tested sizes and results
• 7. E modeling
  • 7.1. Characteristics of modeling
  • 7.2. Characteristics of the mesh
  • 7.3. Tested sizes and results
• 8. F modeling
  • 8.1. Characteristics of modeling
  • 8.2. Boundary conditions
  • 8.3. Characteristics of the mesh
  • 8.4. Tested sizes and results
  • 8.5. Deformed from mode 1
• 9. G modeling
  • 9.1. Characteristics of modeling
  • 9.2. Boundary conditions
  • 9.3. Characteristics of the mesh
  • 9.4. Tested sizes and results
  • 9.5. Deformed from mode 1
• 10. H modeling
  • 10.1. Characteristics of modeling
  • 10.2. Boundary conditions
  • 10.3. Characteristics of the mesh
  • 10.4. Tested sizes and results
  • 10.5. Deformed from mode 1
• 11. Summary of results