Results for combined load cases

You can create combined load cases from SOL 101 Linear Statics - Global Constraints subcases. Understanding how the subcases are combined and how the scale factor is applied can help you to better plan for creating the load cases you want to view in post processing or add to load case sets in Margin of Safety or Load Case Filtering solutions.

Because the SOL 101 Linear Statics - Global Constraints solution is linear static and the constraints are the same for each subcase, the principal of superposition applies. Thus, when you create a combined load case, the software sums the scaled results of the underlying subcases on a component-by-component basis.

For example, suppose that you create a combined load case from two subcases. For the first subcase, you do not apply a scale factor. For the second subcase, you use a scale factor of 2.50. The following table shows some hypothetical displacement and stress results and the combined results.

Component	Subcase 1 scale factor	Subcase 1 results	Subcase 2 scale factor	Subcase 2 results	Combined load case results
u	1.00	0.90	2.50	-0.30	0.15
v	0.30	0.00	0.30
w	-0.40	0.40	0.60
σx	75.00	24.00	135.00
σy	-32.00	8.00	-12.00
σz	0.00	14.00	35.00
τxy	-45.00	-10.00	-70.00
τyz	0.00	0.00	0.00
τzx	0.00	12.00	30.00

Because derived quantities such as von Mises stress, principal stresses, magnitude of displacement, and so on are not linear combinations of the underlying components, the software calculates them from the component results of the combined load case.

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and displayed partNastran as the specified solverStructural as the specified analysisSOL 101 Linear Statics - Global Constraints as the specified solution typeComputed results
Simulation Navigator	Expand Results→right-click Structural→Combined Load Cases

How do I

Create a combined load case

Modify combined load cases in a dialog box

Modify combined load cases in a spreadsheet or text editor

Create a load case set for a margin of safety calculation

Create a load case set from margin of safety results

Learn more

Load case sets (margin of safety)

Combined load cases

Exporting and importing load case sets (margin of safety)

Orphan load cases (margin of safety)

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Results for combined load cases, Simcenter 3D 2021.1 Series

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