General Points

TODO

Definition of a material law

These laws are usually referenced by materials to define a hardening type of a viscosity function. Examples of some available laws for isotropic hardening can be found in Isotropic hardening.

lawno = lawset.define (numero, type)
lawno = lawset(numero)
lawno.put(param, value)
lawno.depend(param, fct, Key(Lock)))
...

`numero`	number of the material law (must be unique)
`type`	type of material (for example `LinearIsotropicHardening`) - see Lois matérielles
`param`	name of the law parameter (for example `IH_SIGEL`)
`value`	value of the law parameter
`fct`	function which characterizes the dependency of the property (optional: no `fct` if no dependency)
`Lock`	Lock which defines the dependency variable of the property (compulsory if there is a dependency)