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Dear Buu,

mass does not need to be referenced in the analysis steps. Once it is applied in the conditions it will be taken into account by any transient analysis you run.

As for the model check, what does it say? Is the model still singular?
Did you try operating your analysis step by step, so ...

As you know changes in stiffness and mass affect the building intrinsic dynamic characteristics as the frequencies.
No way you can change your model stiffness and obtain the same periods.
What's wrong with the new periods?

Hi!

Q1: Since there is no test data, are there any recommended values for the parameters of Gt, fc0, fcr, and Gc?


There is a lot of literature on how to describe material behavior with respect to fracture energy and the relationship between fracture energy and initial and ultimate strength. I ...

Did you partition your model correctly?
You can attach it to your post so we can try and run it ourselves.

You can check here https://asdeasoft.net/?stko-requirements

Dear ankurjain1992,

If I do not model Shear Failure in the short columns and directly do the Non-linear time history analysis then how can I get to know abt the shear failure?
I have seen in a paper "Probabilistic estimation of floor response spectra in masonry infilled reinforced concrete ...

Dear Prabakaran,

I am glad you solved your problem, let us know if you need anything else.

Enjoy your modelling
Francesca

Dear Jacoba, so to answer your initial question, if you simply want to lump plasticity in the nodes you do not need to create an interaction.
Enjoy your modeling
Francesca

Hi Lin Sun,

There is this webinar where they talk about DamageTC3D, did you watch it?
https://asdeasoft.net/?webinar#04

You can find some stuff also here:
https://asdeasoft.net/?university-courses


You can read the following papers to study more about the damage model.
https://www ...

Try this file.
https://we.tl/t-gLCDUbN1P2
The beam inside, to which the physical property vertical was assigned, was meshed in a lot of elements. The central ones were connected with the embedding, but the others at the two ends. You can put elements floating around without constraining them to ...