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Boundary, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Frame

Cad faces, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Frame

Boundary, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Frame

Restrains the selected boundary entities in up to six degrees of freedom. If an input is empty, the corresponding degree of freedom will be unrestrained.

Inputs

NameTypeDescription
BoundaryBoundaryThe boundary entities containing the nodes to restrain.
UxScalarTranslational restraint along the x-axis.
UyScalarTranslational restraint along the y-axis.
UzScalarTranslational restraint along the z-axis.
RxScalarRotational restraint along the x-axis.
RyScalarRotational restraint along the y-axis.
RzScalarRotational restraint along the z-axis.
FrameFrameThe reference frame for the input translational and rotational components. if a frame is not specified, the components are in the global coordinate system.

Outputs

About this Block

What it does: The Displacement Restraint can apply a restraint over the selected boundary. Displacement Restraint block restrains the selected boundary entities in up to 6 degrees of freedom. The default X, Y, and Z directions are the global reference directions. The X, Y, and Z directions are chosen from a reference frame if a Frame input is provided. The corresponding degree of freedom will be unrestrained if an input is empty. Commons uses:
  • Boundary condition in an analysis.
  • A prescribed displacement is used when the deflection/displacement allowed is known.
Tips:
  • To prescribe a displacement using the Displacement Restraint block, input a displacement value you wish to move the boundary in each degree of freedom.
  • Note: The displacement input value will not be divided by the number of nodes/faces in the boundary selected.

Example File

The example below shows a brake pedal simulation setup with just two displacement restraint blocks; one is used to restrain all DOFs, and the other allows Uz of -10mm. Download Example: Displacement Restraint Example Screenshot

Cad faces, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Frame

Restrains the selected CAD faces in up to six degrees of freedom. If an input is empty, the corresponding degree of freedom will be unrestrained.

Inputs

NameTypeDescription
Cad facesCAD Face ListThe boundary cad faces to restrain.
UxScalarTranslational restraint along the x-axis.
UyScalarTranslational restraint along the y-axis.
UzScalarTranslational restraint along the z-axis.
RxScalarRotational restraint along the x-axis.
RyScalarRotational restraint along the y-axis.
RzScalarRotational restraint along the z-axis.
FrameFrameThe reference frame for the input translational and rotational components. if a frame is not specified, the components are in the global coordinate system.

Outputs