topic Re: Importing loads from dynamic simulation into FEA in Inventor Forum

Importing loads from dynamic simulation into FEA

lpudysz — Sat, 04 Feb 2023 21:00:50 GMT

Dear Inventor Users,

Does anyone able to tell, what is the reason for this analysis result? (see attachment)
1. I have performed a dynamic analysis. Then I observed the torques, forces, accererations etc.
2. I imported into FEA-directly from dynamic analysis
3. I pressed "Simulation" and got a zero result as in the attachment. I tried lots of ways but with no solution

Re: Importing loads from dynamic simulation into FEA

JDMather — Sat, 04 Feb 2023 22:12:53 GMT

@lpudysz
No files Attached?

Did you check mark desired Timesteps?

Did you select the component for analysis (looks to me like you missed this step)?

Did you set the Joints for loads?

Did you set to Motion Loads Analysis?

(No images of these two steps - more information is needed.)

Re: Importing loads from dynamic simulation into FEA

lpudysz — Sun, 05 Feb 2023 08:31:31 GMT

I am new here. I forgot about the files.

I tried to follow some tutorial found on YT. Anyway, enclosed you can find PDF description of what I did step by step, and the "project" files (inventor 2023).

Re: Importing loads from dynamic simulation into FEA

JDMather — Sun, 05 Feb 2023 09:00:24 GMT

I do not own a license to a rar extractor software.

But I do own a license to Windows Operating System (given that Inventor runs on Windows OS).

Can you use Windows to zip the folder and Attach the *.zip rather than *.rar?

Re: Importing loads from dynamic simulation into FEA

lpudysz — Sun, 05 Feb 2023 09:19:52 GMT

I use Windows 11+inventor 2023. Now there is *.zip file

Re: Importing loads from dynamic simulation into FEA

JDMather — Sun, 05 Feb 2023 13:16:53 GMT

@lpudysz

I am not sure what happened with your study.

I see a lighting bolt which is Inventors method of indicating that the Loads need to be Updated.

When I right clicked and ran the Update - I get a error.

I went back to Dynamic Simulation and ran the simulation again without making any changes.

Then I went back to Stress Analysis and created a New Study.

This ran fine and returned results as expected.

I then tried running your original study and all geometry disappeared from screen.

There is something wrong with your original study, but I am not sure what is causing the issue.

Edit: I just noticed that you have not installed Update 2 for 2013.

Edit 2: I noticed that many of your sketches are not fully defined - but this should be a cause of the issues - but I get concerned any time I see less than ideal modeling techniques.

My recommendation:

Right click Delete the original study.

Create a New Study and report back the results - did it work or not.

If you can figure out how to reproduce the undesirable behavior (after installing Update 2) let us know.

Re: Importing loads from dynamic simulation into FEA

lpudysz — Sun, 05 Feb 2023 17:08:59 GMT

@JDMather What operating system do you have?
Neither update 2 for inventor 2023 nor even Widnows 11 update solved my problem. I did steps you recommended at the end of your last post - with no results.
I don't think it's a constraint issue, because I made another simple model with correctly defined sketches and the result was the same-"0" stresses in FEA simulation.
I even installed inventor 2022 with all updates-the same.
I have another idea: Could you share a simple e.g. 2 element model, then make a simulation and upload project so I can do the same? This way we will verify if the problem is in Windows 11.

Re: Importing loads from dynamic simulation into FEA

lpudysz — Sun, 05 Feb 2023 19:21:21 GMT

Now I am sure that the cause of the problem is Windows 11.
I installed Inventor 2023 (without any updates) on another computer with windows 10 HE, copied the same project as I sent to @Anonymous, and the simulation runs fine.
Does anyone know how to fix this? Windows 11 update is done, same with Inventor 2023- update 2 (15 Nov 2022). I hope that the solution to the problem is not to buy another - older - operating system. Autodesk claims that inventor works with Windows 11. I guess not really....

Re: Importing loads from dynamic simulation into FEA

johnsonshiue — Mon, 06 Feb 2023 23:16:51 GMT

Hi! Have you tried running Inventor as Admin (right-click on Inventor desktop icon -> Properties -> Compatibility -> check "Run as Admin").

Many thanks!

Re: Importing loads from dynamic simulation into FEA

lpudysz — Wed, 08 Feb 2023 05:51:35 GMT

Unfortunately, no option from compatibility mode works. I tried using the troubleshooting tool. It didn't do anything.

Re: Importing loads from dynamic simulation into FEA

lpudysz — Fri, 21 Jul 2023 09:12:20 GMT

Dear Autodesk Users!

Autodesk solved the problem. The source of the problem was the decimal separator in Windows. After changing from comma to dot everything works fine. Anyway, thank you all for your help