Simcenter Testing Solutions Simcenter Testlab Neo: Operational Data Animation

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Summary

Details

Want to use Simcenter Testlab (formerly LMS Test.Lab) to animate operational data in Simcenter Testlab Neo to get operating deflection shapes (ODS)? If so, this is possible from revision 2206 released in June, 2022.

This article will show how to animate steady state (constant speed) data. Another article will show animating runup / rundown data.

Here is how to do it:
1. Where to find Operational Data Animation in Simcenter Testlab Neo?
2. Getting the Animation Task ready to Animate
3. Single Point Animation - Procedure
4. Band Animation - Procedure
5. Creating and Saving a List of Single Operating Points
6. Creating and Saving a List of Double Operating Points


1. Where to find Operational Data Animation in Simcenter Testlab Neo ?

To use Operational Data Animation in Simcenter Testlab Neo, either start Simcenter Testlab Desktop Neo (or any Neo application) and turn on the Operational Data Animation add-in (see Figure 1) or start as a standalone application from the Testlab Neo Structures Analysis folder (see Figure 2). After starting the application or turning on the add-in, an Animation task will now be available. The Operational Data Animation add-in requires 28 tokens. For more information on tokens, see Simcenter Testlab Tokens: What are they, and how do they work?

Figure 1 - Starting Simcenter Testlab Operational data Animation as an add-in.

Figure 2 - Starting Simcenter Testlab Operational data Animation as a standalone application.

2. Getting the Animation Task Ready to Animate

First, we'll take a look at the Testlab project GBOX_test_data.lms which is a structural testing database that includes a gearbox of a car. This project has a simple geometry and the results of two runs from an impact hammer testing including 33 Coherences, 33 Crosspowers, 33 FRFs and Autopowers at the reference (1) and responses (33). This is the result of an impact measurement but normally it would be a steady state stationary test conducted in Signature Acquisition or Spectral Testing as examples or data collected in Simcenter Testlab Neo Time Data Acquisition and processed in Simcenter Testlab Neo Process Designer as other examples.

Here we are adding all data from Section 1 to the Input Basket as shown in Figure 3. The Animation task will animate the data in the Input Basket.

Figure 3 - Adding data to the Input Basket. Figure 4 - Animation Task.

Figure 5 - Selecting the Data to View on the Animation Task.

Let's use the FRFs associated to the second reference.

3. Single Point Animation - Procedure

Figure 6 - Start the Animation.

4. Band Animation - Procedure


Figure 7 - Animation Double Cursor Type.

5. Creating and Saving a List of Single Operating Points


Figure 8 - Adding an Operating Point to the Calculation List. Figure 9 - Adding Multiple Operating Points. Figure 10 - Scrolling through data by X axis increment or Operating Point.

Now let's investigate removing the operating data points, looking at another reference and how to reload operating points.

Figure 11 - Operating Points: Adding, Removing, Loading and Saving.

Figure 12 - Selecting an ODS ModeSet and loading its operating points.

6. Creating and Saving a List of Double Operating Points

Rather than using a Single X cursor, we will now use the Double X cursor to add the operating points.

Figure 13 - View the results on the Desktop, View Data task.

Rather than find the peaks manually, wouldn't it be great to find them automatically? This is possible if the cursor type is set to Single.

Figure 14 - Adding operating points at peaks.

So far we have only animated the FRF data and this project also has crosspowers and autopowers in that can be animated as well.

[Error] - [16:21:51] Duplicate DOF identifier GBOX_OUT:1:+X. Make sure only one column is selected in the pivot table. Use the 'Swap references and responses' ODS processing option when needed.

There are a few ways to resolve this issue:
1) Add the Reference DOF ID or Reference Point + Reference Direction to the pivot table rows to filter out one of the references or
2) Add the Reference DOF ID or Reference Point + Reference Direction to the pivot table columns and animate them separately or
3) Switch to the ODS Crosspower pivot table view which does (2) for you.

Figure 15 - Changing ODS pivot view and filtering he pivot table.

Similarly, there are ODS pivot table views for several commonly used functions and you can edit and save new ones to manage these views as shown in Figure 16. For steady state data the following functions are supported: Sound Intensity, Spectrums, Autopwers, FRFs, Third Octave and via ODS Function Class perhaps more!

Alternatively, you can find the data on the Desktop, View task and filter it there before adding it to the Input Basket.

For Run Up / Run Down data we can animate Waterfalls, Waterfall Reference, Order Sections, ODS Map Cuts (one slice in time or speed of a waterfall), ODS Frequency Section and perhaps more! Run Up Data will be shown in another Siemens Simcenter community article with a different data set.

Figure 16 - ODS Views.

This article showed how to animate steady state data as 2D curves. If you'd like to animate waterfall data from a run up / down test or the Overall levels, order sections, frequency sections and map cuts from that runup / run down test please see this additional article: Animating waterfall or runup / rundown operational data using Simcenter Testlab Neo for ODS

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