Currently the material is analyzed as is. That means the volume change is introduced through the material. This is also called the nearly-incompressible framework.
New Feature
Add a new Lab feature to run incompressible loadcases. Here the incompressibility is enforced by a constraint eqation (stretch_1 * stretch_2 * stretch_3 = 1). It doesn't matter if the material contains a volumetric part or not because is is deactivated by the constraint.
Lab
Current behavior
Currently the material is analyzed as is. That means the volume change is introduced through the material. This is also called the nearly-incompressible framework.
New Feature
Add a new Lab feature to run incompressible loadcases. Here the incompressibility is enforced by a constraint eqation (
stretch_1 * stretch_2 * stretch_3 = 1). It doesn't matter if the material contains a volumetric part or not because is is deactivated by the constraint.