Reaction force in Plot = gp.force.unbal

Hi Itascan, Could you please confirm it is correct that the “Reaction Force” plotted in figure through Vector is actually the unbance force obtained from the FISH with “gp.force.unbal”? This is confusing though since there is also Attribute “Out of Balance Force” in the plot item of Vector, adjacent to “Reaction Force”.


The Out of Balance Force value for the vector plot item shows the last out-of-balance (gp.force.unbal()) force for all gridpoints, with fixed degree-of-freedoms set to zero.

The Reaction Force value for the vector plot item is the same, except it does not zero out fixed degree of freedoms. In practice fixed out-of-balance forces dominate the magnitudes so that is all you see.

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