masonry micro-modeling

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dieghito3
Posts: 9
Joined: Thu Dec 22, 2022 6:20 pm

masonry micro-modeling

Post by dieghito3 » Mon Aug 07, 2023 11:07 am

Dear STKO Team!
I'm approacing to masonry micro-modeling and I have to reproduce an experimental diagonal test on a simple panel. I red about different strategies proposed by Petracca and others authors in the article: "Micro-scale continuous and discrete numerical models for nonlinear analysis of masonry shear walls". As you can see i have only horizontal mortar joints instead in the vertical ones there's no mortar; so which physical and element properties would you suggest to simulate interfaces between bricks? Currently my model is based on the 2D-C solution.

Thanks for the support!
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STKO Team
Posts: 2247
Joined: Tue Oct 29, 2019 8:45 am

Re: masonry micro-modeling

Post by STKO Team » Tue Aug 08, 2023 1:37 pm

You can keep working with the 2D-C model.
But in the brick-to-brick interface you can use a different material with a very small (almost 0) tensile strength

dieghito3
Posts: 9
Joined: Thu Dec 22, 2022 6:20 pm

Re: masonry micro-modeling

Post by dieghito3 » Tue Aug 08, 2023 4:31 pm

Great! But shall i carry on with the DamageTC3D? Maybe assigning brick's parameters in compression and quite small values in tension or shall I go for an other material?

Thanks again!

STKO Team
Posts: 2247
Joined: Tue Oct 29, 2019 8:45 am

Re: masonry micro-modeling

Post by STKO Team » Wed Aug 09, 2023 8:50 am

you can go on with DamageTC3D (or also ASDConcrete3D).
with:
  1. small tensile strength/fracture energy (but not exactly zero)
  2. high compressive strength/fracture energy (so that it behaves like hard contact in compression)
  3. pdft and pdfc = 0, so that you don't have plastic deformation
This should result in a bilinear behavior (elastic in compression - zero in tension)

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