Frictional Connections Error, not converging

siddhesh · February 14, 2020, 10:43

Below attached geometry is my problem, i am trying to perform in static structural. I have given -500 N on 1/3rd of the length (i.e 5 th block) and connections are frictional with 0.65 frictional coefficient and 2 base faces fixed. Pivot error will and there will be suggestion of using newton raphson unsymmetric.

It works with bonded connection.

Please refer the images attached and please help.

siddhesh · February 16, 2020, 22:34

Please help

evcelica · February 19, 2020, 14:02

Maybe add gravity beforehand, on the first load step, then add your force in the second load step. You push that one block down away from the block on its right, then everything to the right of that block is floating in free space with zero constraints.

I'm guessing if you pushed that pluck radially inwards everything would work, but you are pushing it away from everything on the right.

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February 16, 2020, 22:34		#2
siddhesh New Member Siddhesh Patil Join Date: Feb 2020 Posts: 6 Rep Power: 6	Please help

February 19, 2020, 14:02		#3
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,167 Rep Power: 23	Maybe add gravity beforehand, on the first load step, then add your force in the second load step. You push that one block down away from the block on its right, then everything to the right of that block is floating in free space with zero constraints. I'm guessing if you pushed that pluck radially inwards everything would work, but you are pushing it away from everything on the right.