Duplicating margin of safety calculations

In a margin of safety solution, you have the following options for duplicating an existing calculation:

• The Clone command creates a single copy of a calculation. After you clone the calculation, you can then edit the copy to specify a different FE or geometric entity as the source for the calculation, change the load case set or values for calculation parameters, and so on.

• The Propagate command creates multiple copies of a calculation, each of which that have different FE or geometric entities as their source, all at once. However, the other inputs to the propagated calculations such as the load case set, values for the calculation parameters, and so on are all the same.

• The Copy command creates a single copy of a calculation. When you copy a calculation, you can edit the FE or geometric entity source for the calculation, the load case set, values for the calculation parameters, and so on, as you create the copy. Thus, if you create additional copies, each copy can have unique inputs.

Note:

You cannot use the Propagate command to duplicate a calculation that has multiple sources, even if all of the results for the calculation are extracted from only one of the sources. Thus, to create multiple copies of a calculation that has multiple sources, you must use the Copy command.

Because cloning, propagating, and copying a calculation are all similar commands in that they duplicate an existing calculation, as a best practice, use the command that most efficiently satisfies your modeling requirement.

For example, suppose that you want to evaluate the margin of safety for two shell elements based on the Tresca yield criterion. You can set Tresca plane stress as the method and create a calculation for one of the shell elements. You can then clone the calculation. In the Simulation Navigator, right-click the clone of the calculation and choose Edit. In the Calculation Editor dialog box, modify the existing source so that it points to the other element.

In the previous example, suppose that you want to evaluate the margin of safety for numerous shell elements based on the Tresca yield criterion. You can set Tresca plane stress as the method and create a calculation for one of the shell elements. You can then propagate the calculation to the other shell elements.

Now suppose that you want to evaluate the margin of safety for the same shell elements, but you want to use a different allowable stress value for each shell element. If you propagate the calculation, you would have to later edit the propagated calculations individually to change the allowable stress levels. When you use the Copy command, you can specify the value for the allowable stress as you create each copy.

Learn more

Cloning margin of safety calculations

Propagating calculations

Copying margin of safety calculations

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Duplicating margin of safety calculations, Simcenter 3D 2021.1 Series

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