HI Naida,

I suggest you to take a look to the work of Frédéric Lebon. He is working of this subject  in Marseille, France (Laboratory LMA). Hope this could help.

Regards,  B o B

Hi Peyroux Robert ,

Can you give me some of his references please.

Thank you in advance

Naida

Dear Ugur,

Thank you very much

Naida

Macro models are used to study the overall response of the structure. One of the methodologies to model a system such as shear wall using macro element is to adopt different type of springs instead of structural elements. To simplify the modeling, some researchers considered the homogeneous approach to present the mortar and units with average mechanical properties. This method was used for the large scale models. Mortar joints and units are smeared into one isotropic or anisotropic material.However, since masonry is not homogeneous, this type of model will not be able to properly predict the local behavior of the wall assembly. Some studies have been conducted to consider masonry homogeneous by defining the smeared crack which called micro/macro modeling. This method is based on the same approach used in reinforced concrete. For more detail please refer to the file that I have attached. 

hi Naida

I think this might help you

Hi Naida,

you can search in may profile for my ph.D. thesis about confined masonry and a macro model implemente. There are some micromodels and macromodels and the effect of both types of models.

Hi

i hope someone help me making a model of infilled frame by mcro modeling

Hi Naida,

Micro-modelling undoubtedly provides us with much more information than macro-modelling, but it is time consuming. The best choice could be a multi-scale modelling, where the local analysis is performed by means of micro-modeling tools, after having divided the domain in several units, and interaction between units is then macro-modelled.

A computational method that allows a very accutare micro-modelling analysis is the Cell Method. You can find an example on how the Cell Method can be used for modeling masonry at the micro- and macr-scale here:

https://www.researchgate.net/publication/235998942_Masonry_walls_under_shear_test_A_CM_modeling

Elena

Thanks a lot Elena

Naida

Dear Naida,

Thanks to you!

In re-reading my reply, I realized an involuntary error: when I wrote “the Cell Method can be used for modelling masonry at the micro- and macr-scale”, I actually meant to write “the Cell Method can be used for modelling masonry at the micro- and meso-scale”.

Macro-modelling is time consuming even with the Cell Method and it is better to perform a multi-scale analysis, as I have already written.

Sorry for the mistake,

Elena

P.S.

You can find a further example of modelling with the Cell Method here:

https://www.researchgate.net/publication/256094697_A_Cell_Method_Stress_Analysis_in_Thin_Floor_Tiles_Subjected_to_Temperature_Variation

This second time, I did not model masonry but the detachment of floor tiles in heated floors (a subject related to masonry modelling, indeed).