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If you want to do a cyclic push-over analysis with load-control and nodal loads , I assume that your model will never show a softening branch, otherwise you need to do a displacement-control or to apply an imposed displacement condition. Assuming that you want to do a load-controlled cyclic analysis...

The same issue discussed in this post few days ago:
viewtopic.php?f=27&t=73#p112

don't use "format" otherwise tcl will look for the clock.tcl procedure, which is not included in the tcl folder that we distribute with STKO. You can either just use "set time [clock seconds]" without the "format" option or You can copy a complete TCL installation in "C:\Program Files\STKO\opensees"...

These errors are saying that your model is singular, in particular the 3rd DOF as 0 in the diagonal of the stiffness matrix that cannot be factorized. WARNING BandGenLinLapackSolver::solve() -factorization failed, matrix singular U(i,i) = 0, i= 2 WARNING NewtonRaphson::solveCurrentStep() -the Linear...

Looking at the warings ProfileSPDLinDirectSolver::solve() - aii < 0 it means that some diagonal elements in the stiffness matrix are 0, so the matrix is not positive definite. If you use the rigidDiaphragm with direction Z, then it links the dofs Ux,Uy,Rz to those of the slave nodes, but the other 3...

No you don't need to merge it, just connect it with the slave nodes with an interaction and assign a rigidDiaphragm to the interaction

Unfortunately you cannot get K and M easily... the opensees function printA , will print the systema global matrix, but using a full matrix, i.e. you cannot use a sparse solver, thus it's limited to small models. For the mass, you cannot get the whole M matrix at once, but you can ask for maasses ea...

Hi, You cannot assign a bulk modulus to the ManzariDafalis material, but you can set the following parameters so it should be fine for you: " materialState " 0 = elastic 1 = plastic " IntegrationScheme " 5 = Forward Euler 1 = Modified Euler with error control 3 = Runge Kutta 4th order 9 = Forward Eu...

Of course you can do it, but you need to explain better what you want to do. From your explaination it seems you what your floors to move rigidly only in X or Y direction but be fixed in Z... But I think what you really want to do is the rigidDiaphragm (the floor keeps its shape in the plane, but th...

When you merge some entities, and you have 2 coinciding items, in your case 2 edges (the pre-existing edge with a section, and the new edge that in your case is the border of a surface), the resulting merged edge cannot have the property of both edges (of course), so STKO chooses the property of one...