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Stress of Network B

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Posts: 11
Topic starter
(@horst)
Active Member
Joined: 15 years ago

Dear all,

Im simulating an elastomer, using BB model, under cyclic loading. I m assuming pure shear (&#955,2=1) and always &#955,1>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

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Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

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

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Posts: 11
Topic starter
(@horst)
Active Member
Joined: 15 years ago

Dear Mr Bergstrom

Thank you very much for your great help.
Im solving the equations in Matlab, without finite elements.

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