Inventor Frame Analysis error "Failed to get results."

[jpeters4MKUS]

Sometimes I am working on a Frame analysis and I get the error "Failed to get results." when I try to simulate. The error message is specific to the simulation, and if the simulation is copied then the copy will have the same error. The Simulate progress window gets to "Getting Results..." before exiting. No graphics are created. There is typically one instability error, though I have found that if I eliminate the instability error then the node number changes and I still have an instability error.

Generally I spend some time trying to find the cause of the error but end up needing to create a new simulation and starting from scratch again. Has anyone else experienced this? Did you figure out the cause?

The node with the instability error is typically not anywhere near my most recent changes. I'm hoping to figure out what I'm doing that causes this error so I can reduce the amount of simulations I need to run.

Thanks,

-Josh

[jpeters4MKUS]

I've had some success resolving this error now.

One time I was able to get results by selecting Manage>Rebuild All.

On the most recent occurrence I was able to get results if I deleted one of four pairs of parts I had recently added. Unfortunately the parts were important and could not be left out. The pair of parts was connected in parallel using the same ridged links, and their existence created nodes on nearby members. Since removing the pair was necessary, I assumed it was related to the connection itself. By changing the beam model tolerance from 2% to 1% under Frame Analysis>Frame Analysis Settings>Beam Model I was then able to get results with all four pairs of parts I had recently added.

[jpeters4MKUS · Accepted solution]

Adjusting the beam model tolerance has worked on multiple occasions now. It appears to work both increasing it and decreasing it. Generally there is some adjustments to rigid links required, but it's better than needing to redo my whole analysis.