masonry micro-modeling

[dieghito3]

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!

[STKO Team]

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]

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]

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)