Moment load (Simcenter Samcef)

Use the Moment command to define the magnitude and direction of a moment load. Moments are applied in a node’s rotational degrees of freedom. A positive moment rotates in the direction of the element's connectivity according to the right hand rule. You can define the magnitude of a moment load as a constant value, expression, or field that defines how moment load varies with time.

You can also define a follower moment.

Note:

Because solid elements do not support rotational degrees of freedom, consult the solver's specifications to determine the best approach for applying a moment to a solid mesh.

Define a moment load on geometry or directly on nodes

You can define a moment load on selected:

• Geometry (such as, curves, points, mesh points, polygon faces, or polygon edges).

• Nodes

If you define the moment load on geometry, the software then maps the moment loads to the corresponding nodes.

You can use the Type list in the Moment dialog box to specify how you want to define the moment load. The geometry or FE entities to which you can apply a moment load depend on the option you select from the Type list.

Types of moments

You can apply this type of moment	To this geometry or FE entity	The corresponding Simcenter Samcef Input file entry is	For more information, see
Magnitude and Direction	CurveMesh PointNodePointPolygon edgePolygon face	.CLM CHA/FOL NOEUD - C 4/5/6 V - [NF - TIME]	Define a force or moment load using magnitude and a single direction (Simcenter Samcef)
Normal	CurveMesh PointElement FacePointPolygon edgePolygon face	.CLM CHA/FOL NOEUD - C 4/5/6 V - [NF - TIME]	Define a force or moment load normal to the model (Simcenter Samcef)
Components	CurveMesh PointElement FaceElement EdgePointPolygon edgePolygon face	.CLM CHA/FOL NOEUD - C 4/5/6 V - [NF - TIME]	Define a force or moment load using components (Simcenter Samcef)
NodeID Table	Node	.CLM CHA/FOL NOEUD - C 4/5/6 V - [NF - TIME]	Create loads with node ID or corner node ID tables (Simcenter Samcef)
Edge-Face	Polygon Edge	.CLM CHA/FOL NOEUD - C 4/5/6 V - [NF - TIME]	Create edge-face loads (Simcenter Samcef)

For the Magnitude and Direction and Normal types, you can define a Distribution method for distributing the moment over the geometry or FE entities. For more information on defining a Spatial field for a moment distribution, see Define a spatially-distributed force with a formula field.

Where do I find it?

Application	Pre/Post
Prerequisite	A Simcenter Samcef simulation file as the work part and displayed part and an active solution
Command Finder	Moment
Simulation Navigator	Right-click the Load container→New Load→Moment

Look up more details

Moment dialog box

Quick links

Command reference

Pre/Post video examples

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Moment load (Simcenter Samcef), Simcenter 3D 2021.1 Series

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