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Therefore, the rules for extracting results should be extracted in the order of [S11, S22, S33, S12, InternalVariable] in the opensees wiki, not in the order marked in stko σ 12, right?

Thank you for answering my question. I always thought there was a problem with my model

Dear stko team
I have established a very simple model to simulate sand liquefaction, and it seems that the shear stress shear strain curve of post processing is not satisfactory. Is the result option selected by me for post processing incorrect?

The shear strain shear stress curve should look like ...

but the zerolength element can not connect two node who have diffenerent Dofs(3dof and 2dof)
quadup element(3dof) and elasticbeamcolumn element (2dof)
what should i do....

ok，that is small enough
and i have an another question
if I want to extract the shear strain and shear stress of the soil element in the post processing. In the two-dimensional XY model, what I should extract？is the Gaussian point ε 12 and σ 12？

Dear stko team
Regarding the ZeroLengthContactASSimplex Element, I would like to ask whether it is allowed to not fill in the parameters of Kn, Kt, and mu, but instead define different zerolength materials in each direction, like the Zerolength element, to simulate different force-displacement ...

Dear stko team
I modified my model, used the forcebeamcolumn element, and established a fiber section. However, I still cannot see the Gaussian points of the structure during post processing. I attached my model below, and I don't know what went wrong

like this
The presence of Gaussian dots can be clearly seen in the soil element, but not in the structure

Dear stko team
I have established a model of an underground structure using Rectangular FiberSection and forcebeam column element, while soil is simulated using quadup element. The model can run successfully, but in the post processing Gaussian point plot, there is no Gaussian point in the structure ...

Dear stko team
hi
Is there any tutorial that explains the difference between the region and Rayleigh commands? It's a bit difficult to understand what's written on the openseeswiki
When I assign an incorrect region value to a soil mass, ground motion does not cause soil deformation or increase in ...

ummm..actully what I want to ask is whether the zeroLengthASDimplex element is the only zeroLength element used to connect 2dof and 3dof nodes