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Yes of course, That's right. Thank you vesna.

If you use tcleditor this problem will be happen, A solution is that use the opensees.exe and type : source model.tcl. (model is the name of your file) finally you will see the deformed shape in a long time.

thank you vesna, but I think In a parallel model, strains are equal and stresses and stiffnesses are additive so as there is not any upper bound for Zerolengthcontact3d, there is not any upper bound for parallel model. I think the series model can be a solution because stresses are equal and strains...

My dear friends. How can we define an upper bound for shear strength in a zerolengthcontact3D element? The zerolengthcontact3D is a node to node connection element which has a linear behavior. I wonder if I could define an upper bound for this element to use it in a non-linear model or any alternati...

My dear friends.

How can we have a colorful display of Stress concentration in opensees ?
We can have deformation but what about Stress concentration ?