New question #694531 on Yade:
https://answers.launchpad.net/yade/+question/694531

Hello all,

Reading through the manual and source code, I found that the shear force is 
modelled as a linear function of shear displacement. In each iteration, the 
displacement in the shear direction, dus, is calculated. From this the change 
in the shear force is calculated and added to shear force. This means change is 
shear force is independent of the magnitude of shear displacement or force. 

I wanted to use a non linear material so I believe this model will not work. 
Normal force and moment can be handled but the shear force remains a problem. 
Does anyone know how to implement non linear shear force?

Context: I am simulating the deformation of a cantilever using 
cylinderConnections and I want to use hyper elastic materials for this 
cantilever. These materials behave as a non linear function of deformations.

Kind regards,
Rohit K. John

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