new Timoshenko element J2 Plasticity BeamFiberMaterial2d

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mohammmad
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new Timoshenko element J2 Plasticity BeamFiberMaterial2d

Post by mohammmad »

Hi,

I add Timoshenko element but I have problems with materials in OpenSees. I have modeled a 2D steel column with my element and I use
J2 Plasticity Material and BeamFiberMaterial2d to set strain vector and get stress vector and tangent matrix. My problem is that it works always linear, but when I model the column with DispBeamclmn and uniaxial material after certain displacement it behaves nonlinearly.
I attach the pushover of both models.
http://www.upsara.com/images/k22h_1111.png
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