8/19/2019 zero stiffness detail

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8/19/2019 zero stiffness detail

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along the d.o.f where the stiffness is zero, that point may not be a trouble-spot.

What is the usefulness of these messages : 

A zero stiffness message can be a tool for investigating the cause of instabilities in the model. An instability is a

condition where a load applied on the structure is not able to make its way into the supports because no pathsexist for the load to flow through, and may result in a lack of equilibrium between the applied load and the supportreaction. A zero stiffness message can tell us whether any of those d.o.f are obstacles to the flow of the load.

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