Learning Forum

[Kevin Gnanaraj]

Hi,

I am trying to import point loads on a wing that represent the engine nacelles. However, I don't understand how the mapping works. I had tried adjusting coordinates many times, and it always results in a few points not getting mapped, even though all points seem to fir the criteria of being on the surface or in the model.

Please see the following images that show the problem. I can't use the profile preserving mode, since that results in a really high unphysical load.

How does the force mapping work in ANSYS static structural, and how do I improve the mapping so that all forces are mapped correctly?

[Sahil Sura]

Hello Kevin Gnanaraj,
Please find the following reference which describes the optimal way to import the external loads on the model in Ansys Mechanical. Please ensure you select the desired load from the drop-down menu to import the respective load.
Importing Loads (ansys.com)
Data Transfer Mesh Mapping (ansys.com)
If you have the load data ready, another approach would be using External Data, where you can define the load values with the xo-ordinates in an Excel or text file.
External Data (ansys.com)

Also, please find some of the system coupling tutorials which will provide better insights on Force Mapping-
Transcript and Log File (ansys.com) (Please refer to the section of Mapping Summary)
Examine Force Mapping (ansys.com)

Hope this helps!

Thanks,

Sahil

/forum/forums/topic/how-to-access-the-ansys-online-help/

/forum/forums/topic/guidelines-for-posting-on-ansys-learning-forum/#latest

 

[Kevin Gnanaraj]

Hi Sahil,

Thank you for the resources. Unfortunately at the moment I do not have access to them, as I was simply provided a computer with ANSYS. I have requested the Account/Customer number from IT, but I'm not sure how long that will take. Is there somewhere else I can see the information you have provided?

I am importing the load as external data from a CSV file, with coordinates, and you can see the results in the pictures I showed. This is not mapping correctly.

[Sahil Sura]

Hi Kevin, 

The links can be accessed through the Ansys Help application, which can be accessed directly by searching in the 'Search' bar on Windows.

Would you please help me if you’re an Ansys Customer or if you’re using an academic version? So that it can be helpful to address your concern efficiently.

 

Hope this helps!

Thanks,

Sahil

/forum/forums/topic/how-to-access-the-ansys-online-help/ 

/forum/forums/topic/guidelines-for-posting-on-ansys-learning-forum/#latest 

 

 

[Kevin Gnanaraj]

Hi Sahil,

I am a student at University, but working as a project assistant. I would assume that it is an academic license.

[Sahil Sura]

Hi Kevin,

Here's how you can access the Ansys Online Help from within the Ansys Student products:

1. Open Ansys Workbench (or any other Ansys product) and go to Help > Ansys Workbench Help. A browser window will open.
2. Copy the link to the Ansys Online Help from the post on the Ansys Learning Forum.
3. Paste the link into the address bar of the browser window opened in Step 1, and you'll be able to access the desired page.

Would you please provide some more details on the process which you're following to import the force data, is the data an experimental one or from an FE model?
If seen from the image, there are certain forces that have been imported, thus if the input data is in the correct format, all the points can get imported at the requested locations.
You can also check the efficiency of the imported data for the FE model via the transcripts to ensure a maximum of your input data is reflected in the given model.

Hope this helps!

Thanks,

Sahil

 

[Kevin Gnanaraj]

Hi Sahil,

The data is from OpenVSP, parsed from the Mass Properties file generated from that application. It is a simple set of weights with coordinates in a CSV file, as seen below (this is for a different wing, but the problem is the same):

-1.112627858706000006e+04,5.000000000000000000e-01,5.000000000000000000e+00,1.954545454545454641e-01
-1.112627858706000006e+04,5.000000000000000000e-01,-5.000000000000000000e+00,1.954545454545454641e-01
-1.112627827314000206e+04,5.625000000000000000e-01,1.000000000000000000e+01,1.710227272727272707e-01
-1.112627827314000206e+04,5.625000000000000000e-01,-1.000000000000000000e+01,1.710227272727272707e-01

 

[Ashish Khemka]

Hi Kevin,

 

If you can access the links that Sahil shared, please look for Validating the imported loads. 

 

 

Regards,

Ashish Kumar

[Kevin Gnanaraj]

Hi Ashish and Sahil,

Thank you for the help. I was able to access the help files and correct the mapping by adjusting the imported force coordinates.