Metafor

LagrangianMultiplierEdge[2|3]DElement

Mechanism element controlling an edge from the motion of a point. No axisymmetric correction is implemented. These elements must be associated with a FieldApplicator interaction .

Parameter

Code Metafor	Description	Dependency
`STIFFMETHOD`	Method used to compute the stiffness matrix = `STIFF_ANALYTIC` : analytic matrix (default)\\= `STIFF_NUMERIC` : numerical matrix	-
`CONST_POINT_NO`	Point monitoring the motion of the edge	-
`CONST_DIRECTION`	Constraint direction (1, 2 or 3)	-

Edge monitoring using Lagrange multiplier

The element must first be created using 1D Meshers (Curves). Then, a FieldApplicator is defined and associated to a ElementProperties, either LagrangianMultiplier2DEdge or LagrangianMultiplier3DEdge.

app = FieldApplicator(no)
app.push(gObject1)
app.push(gObject2)
...
app.addProperty(prp)        # association of an ElementProperties
interactionset.add(app)     # the interaction is added in InteractionSet

or

app = interactionset.add(FieldApplicator(no)) #add returns a reference
app.push(gObject1)
app.push(gObject2)
...
app.addProperty(prp)        # association of an ElementProperties

where

`no`	number of the `Interaction` (which is to say the `FieldApplicator`)
`gObject1`, `gObject2`	meshed geometric entity where the finite elements are applied
`prp`	Properties of the Lagrange multipliers to generate.

Table of Contents

LagrangianMultiplierEdge[2|3]DElement

Parameter

Edge monitoring using Lagrange multiplier