Learning Forum

[Luke Dyson]

Hi guys I am trying to solve this robotic finger that is cable actuated. I keep engountering convergance issues and multiple errors such as the ones shown. I also keep getting "elapsed time exceeded the CPU time by an excessive margin" as an error. I have included the file and solver output in the google drive. I am not sure if my constraints are correct but it seems to be an issue with my analysis settings. I have also assinged certain angle parameters to the revolute joints to simulate it griping a certain sized object im not sure if this would affect anything when the displacement is applied to the cables. I have been struggling with this for some time and feel i lack the knowledge to complete it so any help would be useful. Heres the link to the google drive Google drive. 

[peteroznewman]

Luke, did you learn anything from my last piece of advice?  Just replace the rolling contact with a revolute joint and the rest of the advice remains valid.

[Luke Dyson]

Thank you, its just im not sure I completely understood you last time. I already have the joints as revolute joints so your suggesting i replace these with a rolling contact ?

Are there any other ways these error messages could be generated with this model?