Envelope Results

14 Nov, 2011 By: Alastair Robertson

Femap Tips and Tricks: Compile a single output set — a handy way of viewing the worst case when you have several load cases to consider.

Editor's Note: This tutorial courtesy of Siemens PLM.

How can you easily envelope results from several load cases into one single output set that contains a collection of all the highest stresses? Results enveloping is the fastest and easiest way to scan through large amounts of results data to find the worst case, and present this information on one single plot. For multiple load cases, Femap can scan through each and assemble another output set that includes all of the highest stresses for all elements and nodes. This assembled results case can be viewed just like any other results case.

In a model where you have several different load cases, you can create a worst-case output set by selecting Model > Output > Process in the menu and picking the Envelope tab in the Process Output Data dialog. Then you can set the Type of data you want to view — for example, Max Value — and click the Select Output to Process… button. Here you will see all of the output sets available; select the ones you want and click OK to continue.

Now you can view the all the highest stresses from all of the load cases in one view by selecting the Envelope output set.

You can also view a criteria plot of each load case set ID on the elements, to see which load case contributes the worst stress, by selecting the Envelope Set Info output set.

Watch the video of this Femap tip on YouTube.

About the Author: Alastair Robertson

Alastair Robertson

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