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Boundary conditions > Structural constraints > Nastran, Simcenter 3D Multiphysics, Abaqus, ANSYS, and LS-DYNA structural constraints > Fixed constraints

Fixed constraints

Pre/Post provides these commands for creating fixed constraints:

  • Fixed Constraint fixes all six degrees of freedom (DOF).

  • Fixed Translation Constraint fixes the three translational DOF. All rotational DOF are free.

  • Fixed Rotation Constraint fixes the three rotational DOF. All translational DOF are free.

For information about fixed constraints in the Simcenter Samcef environment, see Fixed constraint (Simcenter Samcef).

Where do I find it?

Application Pre/Post
Prerequisite A Simulation file as the work part and displayed partSimcenter Nastran, MSC Nastran, Abaqus, or ANSYS as the specified solver
Command Finder Fixed Constraint Fixed Translation Constraint Fixed Rotation Constraint
Simulation Navigator Right-click Constraint ContainerNew ConstraintFixed Constraint
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Fixed constraints, Simcenter 3D 2021.1 Series

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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/id623411 · retrieved 2026-07-17