An accurate and fast failure simulation for masonry walls is still an active field of research, due to its fundamental role in predicting the overall response structures under seismic other extreme natural manoriginated events. Multiscale models have been successfully exploited achieving this task, being characterized by high computational efficiency, especially presence strong nonlinearities multiple microcrack initiation propagation. In paper, a novel multiscale/multidomain approach...

In this work the performances of Discrete Element Method (DEM) applied to kinematic limit analyses out-of-plane behavior masonry wall panels (with different textures) are investigated. A discrete model is proposed, which assumes that rigid blocks connected by a mortar interface: ap-propriate for historical masonry, where much more deformable than and joints thickness negligible. Therefore can be modeled as bodies zero Mohr-Coulomb-type interfaces. The method known FEM/DEM, combines finite...

Masonry domes represent an important part of the architectural heritage. However, literature about analysis seems less consistent than that referred to other masonry structures. The collapses have happened in recent years as a consequence seismic actions or lack maintenance show need for detailed studies. Here limit evaluate behavior is presented. An algorithm based on kinematic approach has been developed geometric position hinges determine minimum collapse load multiplier. proposed...

Numerical modelling of masonry structures is nowadays still an active research field, given a number open issues related to preservation and restoration historical constructions the availability computational tools that have become more refined. This work focuses on analysis settlement-induced failure patterns characterizing in plane response two-dimensional dry-joints panels, which differ terms texture, geometry settlement configuration. Brick-block masonry, interpreted as jointed assembly...

We provided the detailed buckling and post-buckling analysis of corrugated shallow spherical shells. Such shells are extensively used in civil mechanical engineering. Here main attention is paid to a corrugation as key parameter affecting instability. Three types introduced discussed. The latter includes following types: edge corrugated, half fully Since effect on instability highly affected by imperfections, customised set defects proposed compared perfect structure. Several boundary...

In the last decades modeling of masonry structures has become an argument particularly appealing for many researchers and a large variety numerical techniques have been formulated with aim to produce practical applications in civil engineering, special reference preservation restoration cultural heritage. Nevertheless, question appears today still far from being resolved general way. The characteristics frailty, heterogeneity anisotropy masonry, as well extreme building/construction rules...

Machining vibrations often occur when working with thin-walled workpieces.One efective method to mitigate these is by using a damper, which can enhance machining accuracy, surface fnish, and tool life.However, traditional contact dampers have drawback in that they require direct the workpiece, leading friction, wear, increased cutting forces, reduced accuracy.In contrast, electromagnetic eddy current are noncontact efectively suppress without need for physical contact.In this study,...

Among the most characteristic structures in historical constructions for crossing large spans are masonry vaulted by utilizing their geometric stability to safely transfer loads supports with regard negligible tensile strength. The ability of piers bear such transferred stresses and convey them support is directly related structural integrity, as well a number other factors. Using an in-house limit analysis code, study on crucial parameters impacting safety level under thrust arches...

Historical masonry structures have a great interest in civil engineering because they constitute large part of the world's building heritage. In this paper, effects that different geometrical (panel ratio, block and bond type) mechanical (friction ratio) parameters on in-plane structural response brick panels are investigated. A discrete modeling approach, based limit analysis capable reproducing sliding mechanisms, formulation by one authors has been adopted, enhanced, implemented. Results,...

Within the nonlinear micropolar elasticity we discuss effective dynamic (kinetic) properties of elastic networks with rigid joints. The model a hyperelastic continuum is based on two constitutive relations, i.e., static and kinetic ones. They introduce strain energy density density, respectively. Here consider three-dimensional network made three families fibers connected through massive Effective are inherited from geometry material fibers, whereas (inertia) determined by both Formulae for...

The use of refined models for investigating the in-plane behavior periodic brickwork is an active field research. A key aspect in modeling identification appropriate scale analysis suited effective characterization mechanical properties structure. With this purpose, different will be defined to simulate, with accuracy, masonry. Here, a comparison between Discrete Element Method (DEM) and combined Finite (FEM/DEM) performed. DEM FEM start from assumptions envisage fields application. synergic...

A fast statistical homogenization procedure (FSHP) based on virtual element method (VEM)—previously developed by the authors has been successfully adopted for of particulate random composites, via definition representative volume (RVE), and related equivalent elastic moduli. In particular, adoption elements degree one modeling inclusions provided reliable results materials with low contrast, defined as ratio between mechanical properties matrix. Porous media are then here described...

Abstract. In HBIM processes, the extraction of geometric components from 3D point clouds data can sometimes be a complex process. The so-called Scan to BIM process has been widely utilized: deriving models often local modelling is necessary. This leads in most cases use external tools or processes. both cases, we get model that cannot reused for other items belonging same category, contravening philosophy. Vaulted systems are typical example elements find historical architecture. paper...