Command reference help topics
Design Constraint - Statics dialog box
| Modeling Object | |
|---|---|
| Name | Sets a unique name for the design constraint. |
| Label | Sets a unique integer for the modeling object.The dialog box automatically displays the next available modeling object number. However, you might want to change this if you use a particular series of numbers to identify certain types of modeling objects. |
| Properties | |
| Description | Sets a description for the design constraint.You can also click Description to open the Description dialog box. This lets you see more of the text that you type, as well as cut, copy, or paste text.This description appears only on this dialog box. |
| Response Definition | Response LabelSets a unique design response identifier.This label must begin with an alphabetic character and cannot exceed eight characters.Tip: To make it easier to identify this design constraint in the optimization spreadsheet, use a descriptive label.Response TypeSpecifies the response that you want to constrain.This list displays only responses that are appropriate for a statics subcase.Component TypeAppears when Response Type is set to Displacement (DISP) or SPCForce (SPCFORCE).Specifies whether to apply the constraint to translational (DOF1–DOF3) or rotational (DOF4–DOF6) degrees of freedom for the displacement coordinate system of the selected node.DOF1–DOF3Appear when Response Type is set to Displacement (DISP) or SPCForce (SPCFORCE), and when Component Type is set to Translational.Specifies whether to apply the constraint to a particular translational degree of freedom.For example, to apply the constraint to the first degree of freedom for the displacement coordinate system of the selected node, but not the second or third, set DOF1 to On, and set DOF2 and DOF3 to Off.Setting more than one degree of freedom to On constrains both, similar to creating two separate constraints for each degree of freedom.DOF4–DOF6Appear when Response Type is set to Displacement (DISP) or SPCForce (SPCFORCE), and when Component Type is set to Rotational.Specifies whether to apply the constraint to a particular rotational degree of freedom.For example, to apply the constraint to the first degree of freedom for the displacement coordinate system of the selected node, but not the second or third, set DOF4 to On, and set DOF5 and DOF6 to Off.Setting more than one degree of freedom to On constrains both, similar to creating two separate constraints for each degree of freedom.Lamina NumberAppears when Response Type is set to Composite Strain (CSTRAIN), Composite Stress (CSTRESS), or Composite Failure (CFAILURE).Sets the number of the ply layer that you want to constrain.Element Specification MethodAppears when Response Type is set to Strain (STRAIN), Strain Energy (ESE), Stress (STRESS), Force (FORCE), Composite Strain (CSTRAIN), Composite Stress (CSTRESS), or Composite Failure (CFAILURE).Specifies the method to use for selecting the elements to use for the response.Select Element Selection to select the elements using a group or the graphics window. Select Physical Property to select them using a physical property table.Element DimensionAppears when Response Type is set to Strain (STRAIN), Strain Energy (ESE), Stress (STRESS), or Force (FORCE), and when Element Specification Method is set to Element Selection.Specifies the element dimension, such as 3D for a tetrahedral mesh.The options that appear in this list vary, depending on your selection in the Response Type list.Element TypeAppears when Response Type is set to Strain (STRAIN), Strain Energy (ESE), Stress (STRESS), or Force (FORCE), and when Element Dimension is set to 0D or 1D.Specifies the type of element to use for the response.The options that appear in this list vary, depending on your selection in the Element Dimension list.TypeAppears when Element Specification Method is set to Physical Property.Specifies the type of physical property table to use for selecting the elements.The options that appear in this list vary, depending on your selection in the Response Type list.Physical Property Appears when Element Specification Method is set to Physical Property.Specifies the physical property table to use.If the list is extensive, click More Options to search for a particular physical property table or filter the list.You can also click Create Physical to create a new physical property table for the selected physical property type, or click Open Manager to edit an existing physical property table.Element ResultAppears when Response Type is set to Strain (STRAIN), Strain Energy (ESE), Stress (STRESS), Force (FORCE), Composite Strain (CSTRAIN), Composite Stress (CSTRESS), or Composite Failure (CFAILURE).Specifies the element result to use as the response.The options that appear in this list vary, depending on your selection in the Response Type list and other element specification options.If Item Code appears in the list, you can select that option and then set the appropriate Simcenter Nastran item code.Item CodeAppears when Element Result is set to Item Code.Sets the Simcenter Nastran item code to use as the response.Note: For some element types, the response value depends on the location setting for the structural output request. You can set this in the case control for the solution.For more information about item codes, see Item Codes. |
| Node Selection | Appears when Response Type is set to Displacement (DISP) or SPCForce (SPCFORCE). Group ReferenceLets you select nodes by selecting a group.For more information, see Group Reference options.Select Node Available when the Group Reference check box is cleared.Lets you select nodes in the graphics window.ExcludedLets you exclude certain nodes from selection. |
| Element Selection | Appears when Element Specification Method is set to Element Selection. Group ReferenceLets you select elements by selecting a group.For more information, see Group Reference options.Select 0D Element Appears when Element Dimension is set to 0D. Available when the Group Reference check box is cleared.Lets you select 0D elements in the graphics window.Select 1D Element Appears when Element Dimension is set to 1D. Available when the Group Reference check box is cleared.Lets you select 1D elements in the graphics window.Select 2D Element Appears when Element Dimension is set to 2D Shell or 2D Shear. Available when the Group Reference check box is cleared.Lets you select 2D elements in the graphics window.Select 3D Element Appears when Element Dimension is set to 3D. Available when the Group Reference check box is cleared.Lets you select 3D elements in the graphics window.ExcludedLets you exclude certain elements from selection.Note: If you select elements in the graphics window, be sure to select only elements of the appropriate type. For example, if Element Dimension is set to 1D and Element Type is set to CBEAM, you can select any 1D element, even if it is not a CBEAM element.If you select elements that are not the appropriate type, Simcenter Nastran might use unintended responses from other elements for which the response item code is still valid. |
| Limits | LowerSets the lowest acceptable value for the selected response.The unit of measure depends on the selected response. For example, for Displacement (DISP), you might specify the value in inches or millimeters. If necessary, the exporter converts the unit of measure to the one required by Simcenter Nastran.If Element Result is set to Item Code, the value uses the appropriate unit of measure for the model and the selected response.UpperSets the highest acceptable value for the selected response.Note: If you do not want to specify a lower or upper limit, leave the corresponding box blank. If you type 0, the solver interprets that as the constraint value. |
| Card Name | Displays the names of the Simcenter Nastran bulk entries that will be generated when you solve the solution: DCONSTR and DRESP1. |
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Design Constraint - Statics dialog box, Simcenter 3D 2021.1 Series
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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid1497554 · retrieved 2026-07-17