Automatically find null displacement point in Ansys

[socha1810]

Hello everyone!

I'm currently working on a vibration analysis of a beam with additional weights attatched to it's ends. My goal is find the natural frequencies of the beam and the null displacement points. Since I need to perform this analysis for different beam geometries and lengths, I have parametirized my model and created a bunch of design points to speed up the process. This approach is excellent for finding the natural frequencies of the system, but not so much for finding the nodes seeing that I have to manually check the "x" coordinate of the nodes. I was wondering if anybody has ever worked with a case similar to mine and know's a way of automatically retrieving the coordinate as a parameter(or any tool that might help).

I'm aware that Mechanical APDL might be able to solve this issue, but for someone with little experience with it such as myself, I find it hard to even start looking for how to accomplish this task(since I don't know how the language works).

Any help would be greatly appreciated,

 

[scheah]

[URL unfurl="true"]http://www.ansystips.com/2017/11/designxplorer-design-point-alternative.html[/url]


Kind regards,
Jason

 

[socha1810]

Thank you for your answer, Jason.

Unfortunately, by using this method, all I get is a "File not found" message in the command snippet. Would you know how to fix it?

Best regards,

Leonardo

 

[scheah]

Hi Leonardo,

I'm sorry the post wasn't clear. It's hard to troubleshoot from afar but here is a few things that comes to mind on things to check:
0. In the solution output file, did it indicate which file was not found?
1. Right-Mouse-Button on "Solution" to "Clear Generated Data" before hitting solve again. This hopefully recreates any missing files.
2. Do you have the Command Snippet at the "Solution" section, not "Modal" section? It would complain of no file.db.
3. In "Analysis Data Management", did you have "Save MAPDL db" as "Yes"? The file.db would be missing otherwise.


Kind regards,
Jason