Expressions
Create an expression for a measurement
You can create expressions for the following measurements: distance between points, length along a curve, angles, volume of a body, area of a surface, and so on. This example shows how to create an expression for the distance between two points.
Choose Tools tab→Utilities group→Expressions .
If necessary, in the Expressions dialog box, from the Dimensionality list, select Length.
Right-click the Formula cell and choose Edit.Note: When you right-click the Formula cell, it must be colored blue in order for Edit to show up in the list of options.
In the Edit dialog box, from the measure command list, select Measure Distance .The Measure Distance dialog box opens.
Select the start point and end point .
Click OK to close the Measure Distance dialog box.
Click OK to close the Edit dialog box.
In the Expressions dialog box, in the Name cell, type the name of the measurement.
Click OK to close the Expressions dialog box.
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Create a user-defined expression
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Replace an expression in a formula
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Expressions
System-defined and user-defined expressions
Domains
Case sensitivity in expressions
Using expressions to define boundary conditions
Finding where expressions are used
Boundary condition ID in expressions
Using unit normal vector components as variables in expressions
Special consideration when importing expressions
Specifying the default value for variables and plug-in functions
Generating a contour plot of an expression
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Example of an expression
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Create an expression for a measurement, Simcenter 3D 2021.1 Series
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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid917653 · retrieved 2026-07-17