Element Types
- Un
-
n must be a positive integer () that will define the element type uniquely in Abaqus/Standard
- VUn
-
n must be a positive integer () that will define the element type uniquely in Abaqus/Explicit
Active Degrees of Freedom
As defined in the user element definition.
Additional Solution Variables
You can define solution variables associated with nodes that are not connected to other elements. However, in Abaqus/Standard, definition of constraints with Lagrange multipliers in user elements should be avoided because of potential equation solver problems.
In Abaqus/Explicit definition of constraints with Lagrange multipliers is not possible because the stable time increment would decrease to infinitesimally small values.