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[Luke Dyson]

Hi everyone, I seem to be gaining quite alot of errors when trying to run a static structural anlysis on this robotic finger. It is cable actuated, I have defined the 4 joints a revolute and the contacts. In addtion i have turned on large deformation and added substeps to the solution. I have applied displacemets to the two cables. I am attempting to see the total deformation as the cable displaced and the mechanism moves.

I have attempted to increase the number of substeps and decrease the displacement to see if it will converge however no luck. I keep getting errors such as high distortion and non linear problem unable to converge. If you want the file to make it easier let me know Thank you!

[Aniket]

Ansys staff can not download/share any files on the forum, so if you want to reach a larger audience to get answers from, please insert inline images describing your problem. what errors are you getting? For starters, can you try this with a transient analysis?

-Aniket

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[peteroznewman]

Luke, here is a discussion on a cable-driven joint that demonstrates one way it can be done. Here is the link to the Ansys 2022 R2 archive. While this shows a rolling joint, your model with joints may be easier to solve because is uses revolute joints. The flexible body version of your finger is going to be much more difficult to solve.