Adding CANN material model

[divyaadil23]

Problem

Every time we want to use a new material model for an FSI simulation, we need to add a new case and test it.

Solution

The CANN model takes the terms of the strain energy function in the form of a parameter table and gets the stress and elasticity tensors from it. This would make it easy to use non-standard/new material models. We can also test the models discovered by the constitutive artificial neural network developed by Ellen Kuhl's group. Here is how it can be implemented: https://arxiv.org/pdf/2404.13144

Additional context

NOTE: The implementation is not linked to the neural network for model discovery. This is just a way to use the newly discovered models for FSI simulations.

Code of Conduct

• I agree to follow this project's Code of Conduct and Contributing Guidelines

[ktbolt]

@divyaadil23 New material models are not added very often and adding a test case for it is not very difficult.

You would also need to add a new test case for every new set of CANN parameters.