The new version of the code presents an improved and more intuitive
management of the subroutine and an easier use of Job monitor dialogue.
Enjoy it
http://www.nosaitaca.it/software/

The improved version of NOSA-ITACA is now available at www.nosaitaca.it/software/. A more friendly monitor analysis has been implemented. Bugs related to card creation are now fixed. At www.nosaitaca.it/software/ you can find also some tutorials that will guide you through the use of the code. Enjoy !

Running NOSA on Ubuntu 18.04 is not (yet) officially supported, but you may use the package for Ubuntu 16.04, as indicated at

http://www.nosaitaca.it/software/

See also the prevoius post about it ! Enjoy !

https://www.sciencedirect.com/science/article/pii/S0950061818322116 The mechanical behavior of masonry materials has a common feature: a nonlinear behavior with high compressive strength and very low tensile strength. As a consequence, old masonry buildings generally present cracks due to permanent loads and/or accidental events. Therefore, the characterization of the global dynamic behavior of masonry structures should take into account the presence of existing cracks. This paper presents a numerical approach coupling linear perturbation and modal analysis in order to estimate the dynamic properties of masonry constructions, taking into account the existence of structural damage. First, the approach is validated on a masonry arch subjected to increasing loads, via three FE codes. Then,the same procedure is applied to a real masonry structure affected by a severe crack distribution using NOSA-ITACA code. Enjoy the paper !

https://www.annalsofgeophysics.eu/index.php/annals/article/view/8025 https://www.researchgate.net/publication/331199456_Experimental_and_nume... This paper presents a study on the seismic response of the San Frediano bell tower in Lucca. The tower’s ambient vibrations were continuously monitored for about one year, form October 2015 to October 2016. During this monitoring campaign, many seismic events were recorded on the tower and the most relevant turned out to be the Amatrice earthquake, which struck Central Italy on 24 August 2016. The paper begins with a review of the experimental results obtained on the tower’s dynamic behaviour. Then, a finite element numerical model of the tower is presented and validated via model updating, by assuming the tower’s constituent materials to be unable to withstand tensile stresses. The experimental records of the Amatrice earthquake are also included in the analysis to assess the dynamic behaviour of the finite element model under ambient vibration. Finally, a numerical simulation is performed of the tower subjected to the Lunigiana earth-quake, recorded in Fivizzano (Tuscany) on 21 June 2013: the results of the dynamic analysis are presented and discussed. Enjoy the paper !

New Paper: "Numerical insights on the structural assessment of historical masonry stellar vaults: the case of Santa Maria del Monte in Cagliari" Enjoy this free version of the paper!

https://rdcu.be/bpvX0

The aim of this paper is to present an in-depth numerical investigation on the statics of historical masonry stellar vaults, a special class of masonry ribbed vaults whose three-dimensional geometry features a star-shaped projection on the horizontal plane. In particular, the mechanical behavior of the masonry stellar vault belonging to the church of Santa Maria del Monte in Cagliari (Italy) is analyzed and illustrated as an especially meaningful case study. This church, which was built during the second half of the sixteenth century, is a beautiful example of Gothic-Catalan style, and its ribbed stellar vault is one of the most representative of this type in the town of Cagliari. The geometric outline of the vault has been obtained through laser scanning techniques and a procedure of reverse engineering. Starting from a three-dimensional representation of its geometry, the ultimate load-bearing capacity of the stellar vault can be accurately estimated through a recently developed, NURBS-based upper-bound limit analysis scheme. A comparison with incremental nonlinear analyses carried out with the commercial finite element code DIANA is presented. Furthermore, the paper also includes a sensitivity study aimed at investigating the role of ribs on the ultimate load-bearing capacity of the structure.

NOSA-ITACA is a software product of the Mechanics of Materials and Structures Laboratory of ISTI-CNR, distributed via the http://www.nosaitaca.it/software/ website. The package includes SALOME v8.3.0, and is available for Ubuntu 14.04 and 16.04. NOSA-ITACA enables you to conduct both linear and nonlinear static analyses and modal analyses. NOSA-ITACA can be used to study the static behavior of masonry buildings of historic and architectural interest and model the effectiveness of strengthening operations.

Hi, is there anyone has the experience in modelling and solving masonry structural system ? currently im facing the issue in inputting the data of interaction between the blocks of masonry. i'm trying to model 3 storey masonry (material : Concrete Masonry Unit (CMU) ) building in ABAQUS program by implementing 'macro-modelling' technique, where the block size is 200x400mm including 10mm thickness of mortar joint.

1. is there any specific properties (or mortar properties) need to be lookup regarding on the interaction between the masonry blocks?2. is there any tutorial available regarding on this particular task ?

here we are to tell you how we can model masonry in abaqus cae.
there are 3 ways:
1-micro modeling
2- macro modeling
3- micro-macro modeling(HOMOGENIZATION)
micro modeling;
in this method all parts should be modeled in abaqus separately.
but notice that don't use shell to modeling grout because of 3d properties of grout and cohesive characteristics.
this method is suitable for small masonry panels with 2-3 layers of brick.
model all parts and give properties to each one. in assembly model assemble those parts and give cohesive interface and normal and frictional properties to join between brick and mortar.

macro modeling
In this method there is no grout modeling,and it is suitable for 3d masonry buildings with plans and more walls.
in this way first of all you should obtain a properties of macro wall by verifying a small model in micro to calibrate properties.

micro-macro modeling(HOMOGENIZATION)
in this method you should model just blocks or bricks and put them together to assemble the wall,but there is no mortar,instead thickness of mortar added to brick dimension and the properties of mortar can be given by cohesive element.read this article below:
www.femiran.com-HOMOGENIZATION_OF_MASONRY.pdf

wath these videos:
masonry modeling with shotcrete in abaqus FEMIRAN

Cracking in masonry infilled steel frames with openings in ABAQUS

have any question contact us:
www.proffem.com
proffemgroup@gmail.com

Professor Luigia Binda, one of the foremost authorities in masonry research, and in particular the restoration of historic buildings, steps down from her role as European Regional Editor of the journal. Professor Andrew Boyd, from McGill University, Canada and Professor Amir Mirmiran from Florida International University, USA who served as North American Regional Editors for the past four years, are also retiring. Professor Michael C Forde, Editor-in-Chief will continue to be assisted by Professor Masayasu Ohtsu, who is promoted to Senior Editor, whilst there are two to new appointments: Professors P A Muhammed Basheer and Kent A Harries become Editors.

To read the full announcement, please go to the http://www.journals.elsevier.com/construction-and-building-materials/journal-news/new-editorial-structure-construction-building-materials/

The objective of this research project is to develop a three dimensional model for masonry. This model must be capable of predicting the behaviour of masonry subjected to new loading conditions. The model is time dependent in order to take the changing of strength and stiffness as a function of time into account. Consequently, the current state of the material parameters can be introduced (e.g. degradation of strength and stiffness due to environmental reasons). Damage accumulation is also taken into account. This enables the possibility to introduce initial damage. http://www.uhasselt.be/actueel/vacatures/vac320493.asp