v6.04.142 SSNV142 - Own creep test: Granger model

Summary:

This nonlinear quasistatic mechanics test case simulates a uniaxial creep test. It aims to validate the behavioral relationship of « Granger » BETON_GRANGER, making it possible to model the natural creep of concrete. This linear viscoelastic model (grouping of Kelvin rheological models in series) makes it possible to take into account the effects of stress, temperature and humidity.

In this test, the stress applied, the temperature and the hygrometric state are constant.

In the models:

• A: the cylinder is modelled axi-symmetrically by four quadrangle elements with 8 knots.

• D: treats the same problem on a \(\mathrm{3D}\) cube.

The results obtained by*Code_Aster* are compared with the reference analytical solution.

• 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. Benchmark results
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
• 4. D modeling
  • 4.1. Characteristics of modeling
  • 4.2. Characteristics of the mesh
  • 4.3. Tested sizes and results
• 5. Summary of results