💐Materials

There are two families of material that you can define in Alpaca 4d: UniaxialMaterial and NDMaterial.

UniaxialMaterial is used to construct a material object which represents uniaxial stress-strain relationships. The implemented relationship is Linear Elastic.

NDMaterial is used to construct a material object which represents the stress-strain relationship at the gauss-point of a continuum element. The behaviour is an Elastic Isotropic.