v6.04.148 SSNV148 - Weibull and Rice-Tracey models in 3D and in landfill

Summary:

This nonlinear quasistatic mechanics test makes it possible to validate the Weibull and Rice and Tracey models in 3D for non-monotonic mechanical loading cases (see POST_ELEM and POST_BEREMIN).

At the temperature of \(–50°C\), a smooth cylindrical specimen is first deformed by up to 10%. After slightly unloading it, the level of deformation reached is maintained constant while the temperature of the test piece decreases homogeneously to \(–150°C\). At this new temperature, an additional deformation is applied to reach 15% in total. The probability of breakage by cleavage as well as the growth rate of the specimen cavities are calculated for the entire loading path.

The modeling of the specimen is carried out with 3D elements (HEXA20, PENTA15).

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions and loads
  • 1.4. Initial conditions
• 2. Benchmark solutions
  • 2.1. Calculation method
  • 2.2. Weibull
  • 2.3. Rice and Tracey
  • 2.4. Reference quantities and results
  • 2.5. Uncertainties about the solution
• 3. Modeling A
  • 3.1. Characteristics of the mesh
  • 3.2. Tested sizes and results
• 4. Summary of results