Dear all,
Im simulating an elastomer, using BB model, under cyclic loading. I m assuming pure shear (λ,2=1) and always λ,1>1 (never compressed in the length direction).
Is there any physical meaning in getting negative stresses in network B in length direction (stress,B,1) or its just a computational error?
Thank you all
The BB-model is very cool model 😎
How are you solving the equations? Are you using a FE program or some other way.
The stress in the B-network can be negative during unloading from a tensile strain. That is part of the model and is OK.
-Jorgen
Dear Mr Bergstrom
Thank you very much for your great help.
Im solving the equations in Matlab, without finite elements.