When you add dimensions to your part, Pro/ENGINEER assigns a generic name to each dimension. This name consists of the letter "d" with a number appended. This naming convention can be confusing in Mechanica, especially if there are multiple design parameters associated with your part.

In processing design parameters, Mechanica uses dimension names, Pro/ENGINEER parameter names, or beam section names as the design parameter names. If you create design parameters for your part's dimensions, you may find that changing the generic dimension names to meaningful names helps you identify which design parameter produces what shape change.

Because Mechanica tracks the dimensions for all parts in an assembly, changing dimension names is especially important if you are doing assembly work. For assemblies whose parts still have generic dimension names, Mechanica will likely encounter multiple dimensions with the same name. For example, every part in the assembly will probably include a dimension with the generic name of d0. If you try to create design parameters for two different dimensions that have the same name, Mechanica will display a warning and ask you to rename the second dimension.

Here are some tips for working with dimension names:

You can check your part's current dimension names with the Analysis>Mechanica Design Controls>Switch Dim command in Mechanica or the Info>Switch Dimensions command on the Relations dialog box in Pro/ENGINEER. You access the Relations dialog box through the Tools>Relations command.

You can change dimension names when you define design parameters in Mechanica. If you want to change the names before accessing Mechanica, activate the dimension display in standard mode, select dimension, and use the Edit>Properties command. Once you click this command, you can use the Dimension Text tab on the Dimension Properties dialog box to change the name.

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