Figure 1.1-1: G geometry of the tube

v6.04.131 SSNV131 —Straight cracked elasto-plasticity pipe under combined loading

Summary:

The problem under consideration is a cracked straight tube with a semi-elliptical longitudinal defect in the inner skin. The straight pipe is subjected to a loading of combined pressure and bending moment. This test makes it possible to calculate the local energy restoration rate at the bottom of the crack by the G-theta method (command CALC_G) The local energy restoration rate is calculated according to the interpolation LINEAIRE. The integration rings are defined by the data of the number of layers (NB_COUCHE_INF and NB_COUCHE_SUP).

The value of G at the bottom of a crack is compared to a score used for the validation of simplified methods in fracture mechanics.

• 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. Bibliography
• 3. Modeling
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
• 4. Summary of results