How to use the Constitutive Law class
From KratosWiki
The constitutive law behaviour is dealt with in kratos by the use of the class "ConstitutiveLaw", with a public interface defined in the file
kratos/kratos/includes/constitutive_law.h
which also provides some rather extensive inline documentation (in the form of comments in the code).
By design such file aims to provide a very flexible interface to constitutive law modelling, with the specific goal of maximizing the flexibility in the implementation of complex constitutive behaviours. While such approach provide obvious advantages, it also implies that the API is more complex than what would be strictly needed for very simple constitutive laws.
The objective of current HowTo is to provide a brief introduction to the interface
