Fixtures
The Fixture PropertyManager allows you to prescribe zero or non-zero displacements on vertices, edges, or faces for use with static, frequency, buckling, dynamic and nonlinear studies.
To apply a restraint:
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In a study, right-click the Fixtures and select from the options.
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click on Apply loads and select Restraints 
on the Simulation toolbar.
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click Simulation, Loads/Fixture, Fixtures.
The Fixture PropertyManager appears.
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Set Type to one of the following:
Under Standard:
Under Advanced:
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Select the model entities to which the restraint is applied.
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If you select Use Reference Geometry in step 2, select a valid entity for direction.
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In nonlinear studies and for restraints other than Fixed, Immovable, and Symmetry restraints, you can associate the selected restraint type with a time curve. Under Variation with time, do the following:
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Click Linear to use a default linear time curve.
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Click Curve then click Edit.
The Time Curve dialog box opens.
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Enter a name for the time curve in the Name box.
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Enter the curve data points under the X and Y columns.
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Click OK.
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In the PropertyManager, click 
.
Related Topics
Split tab for Fixture
Symmetry Restraints for Shell Models
Symmetry Restraints for Solid Models