Python bindings and helpers

If you compile NEML with the python bindings the build will produce compiled python modules in the neml/ directory. The names of these modules match the underlying C++ files and also match the chapter titles in this manual. So for example, yield surfaces will be in the module surfaces and so on. All public methods of all classes are available in python. The modules are configured to take standard Python lists as input, rather than numpy arrays.

To help developing, testing, and debugging material models NEML provides several python drivers in the neml python module. These helpers run material models degenerate NEML’s 3D formulation to 1D uniaxial stress, exercise NEML material models in common experimental loading situations (uniaxial tension, creep, stress relaxation, strain and strain controlled cyclic loading, with holds, and strain rate jump tests), run simulations of arbitrarily connected collections of uniaxial bars, where a NEML model gives the constitutive response of each bar, and runs simplified, 1D models of pressure vessels, again using a NEML model to define the vessel’s constitutive response.

• uniaxial
• drivers
  • Uniaxial tension
  • Strain controlled cyclic
  • Strain controlled cyclic with follow up
  • Stress controlled cyclic
  • Stress relaxation
  • Creep
  • Strain rate jump test
  • Isochronous stress-strain curve
  • Thermomechanical test
  • Driver classes
  • Helpers
• arbbar
• axisym