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Dear mhscott and selimgunay thank you for your answer. Does the meaning of following the equation number mean that the following 2DOFs are arranged in the following stiffness matrix and mass matrix in the shear mass system? I would appreciate if you could answer. node 1 0.0 0.0 node 2 0.0 0.0 -mass ...

One last question. Assume that the ground is node1, the height of the first floor is node2, and the height of the second floor is node3. The element numbers were set in order with the zeroLength element, but is it calculated automatically considering the floor in the MDOF stiffness matrix? element z...

Dear selimgunay

I changed lambdaN as follows and succeeded.

When masses were changed, the X direction displacement became "nan" and an error occurred.

Thank you for the appropriate advice.

Dear mhscott and selimgunay When add more fix commands to the vertical and rotational DOFs of nodes 2 and 3 was set as follows and calculated, the following error occurred. Thank you for your advice. # set the boundary conditions # tag DX DY RZ fix 1 1 1 1 fix 2 0 1 1 fix 3 0 1 1 WARNING: analysis ....

I'm trying a two-story MDOF analysis. I created the code as follows and calculated it, but I got the following error. If you understand the cause, I would appreciate it if you could let me know. WARNING: analysis .. existing StaticAnalysis exists => wipeAnalysis not invoked, problems may arise WARNI...

Dear selimgunay and mhscott I will try the <-iter $ maxIter $ tol> option of the flatSliderBearing element. I was very interested in detailed analysis considering slip springs on the top, bottom, left and right of the masonry block unit, so I was trying. There were many things I did not understand b...

The response displacement of node716 stopped at 0.5 inches. In the paper, it was the code for specimen 8, with 0.8 inches being the maximum. Although it is about 0.3 inches short. I will try to see if the response displacement is extended with Specimen 9 with changed parameters. Probably, since elem...

Dear mhscott


Thank you for the answer.

I'll try.

Dear selimgunay The same result was obtained by reducing Dincr to 1e-7. Probably, since element flatSliderBearing is used, the displacement increases when slipping, which may cause an error in the convergence of the overall stiffness matrix. Example) #ZLE for discrete spring interfaces Frame 1 #ZLE ...

Dear selimgunay

Thank you.

I'll give it a try.

Dear selimgunay

Thanks a lots!

I have heard about matlab, but it is not a usable environment.

python is available.
Is there any free software that converts the tcl language into a python script?

Or will tcl be read by an import statement etc. and be calculated by python?

Dear selimgunay Thanks a lots! I tried 1e-6 before. As a result, force crossed 0 and was able to analyze to the negative side, but it also stopped halfway. The pushover analysis was similar although the displacement increased. Now try with 1e-7. It takes a lot of time and there is a lot of data, so ...

Dear selimgunay Thanks a lots! I changed the following part and recorded the node 716. set Dy [expr 0.1*$HBuilding]; set iDmax "0.5 0.75 1.0 1.5 2.0 3.0 4.0"; set Dincr [expr 0.00001]; set Fact $Dy; set CycleType Full; set Ncycles 3; recorder Node -file $dataDir/JointDispCyc.out -time -node 716 -dof...

Dear selimgunay Thanks a lots! I don't know how to apply dynamic analysis to static analysis, so I added an algorithm and a convergence judgment part. This time I tried to increase it by 1e-04. Similarly, the calculation stops at around 0.25 inch. The modified code is shown below. Thank you for your...

I would like to do an pushover analysis and cyclic loading analysis of the next paper. https://vtechworks.lib.vt.edu/bitstream/handle/10919/79790/Salinas_Guayacundo_DR_D_2016.pdf?sequence=2 I wanted to analyze up to 3 inches like the paper, so I implemented it with a small increment rate of 1e-5. Ho...