Structure for the constraint tuple = ("Constraint Name", "Value"). "Constraint Name" defines the reference name for the constraint being specified. The "Value" can either be a JSON String dictionary (see Section JSON String Dictionary) or a single string keyword (see Section Single Value String).

JSON String Dictionary

If "Value" is JSON string dictionary (eg. "Value" = {"groupName": "plateEdge", "dofConstraint": 123456}) the following keywords ( = default values) may be used:

constraintType = "ZeroDisplacement"
Type of constraint. Options: "Displacement", "ZeroDisplacement".

dofConstraint = 0
Component numbers / degrees of freedom that will be constrained (123 - zero translation in all three directions).

gridDisplacement = 0.0
Value of displacement for components defined in "dofConstraint".

Single Value String

If "Value" is a string, the string value may correspond to an entry in a predefined constraint lookup table. NOT YET IMPLEMENTED!!!!