Departamento Académico de Ingeniería

URI permanente para esta comunidadhttp://54.81.141.168/handle/123456789/124167

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2014 - 20172

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Autorsearch.filters.applied.operator.equals: search.filters.author.Camata, GuidoTemasearch.filters.applied.operator.equals: search.filters.subject.Numerical modelling

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Mostrando 1 - 2 de 2
  • Miniatura
    ÍtemAcceso Abierto
    Alternative approach for reproducing the in-plane behaviour of rubble stone walls
    (2017) Tarque, Nicola; Camata, Guido; Benedetti, Andrea; Spacone, Enrico
    Stone masonry is one of the oldest construction types due to the natural and free availability of stones and the relatively easy construction. Since stone masonry is brittle, it is also very vulnerable and in the case of earthquakes damage, collapses and causalities are very likely to occur, as it has been seen during the last Italian earthquake in Amatrice in 2016. In the recent years, some researchers have performed experimental tests to improve the knowledge of the behaviour of stone masonry. Concurrently, there is the need to reproduce the seismic behaviour of these structures by numerical approaches, also in consideration of the high cost of experimental tests. In this work, an alternative simplified procedure to numerically reproduce the diagonal compression and shear compression tests on a rubble stone masonry is proposed within the finite element method. The proposed procedure represents the stone units as rigid bodies and the mortar as a plastic material with compression and tension inelastic behaviour calibrated based on parametric studies. The validation of the proposed model was verified by comparison with experimental data. The advantage of this simplified methodology is the use of a limited number of degrees of freedom which allows the reduction of the computational time, which leaves the possibility to carry out parametric studies that consider different wall configurations.
  • Miniatura
    ÍtemAcceso Abierto
    Numerical simulation of an adobe wall under in-plane loading
    (2014) Tarque, Nicola; Camata, Guido; Varum, Humberto; Spacone, Enrico; Blondet, Marcial
    Adobe is one of the oldest construction materials that is still used in many seismic countries, and different construction techniques are found around the world. The adobe material is characterized as a brittle material; it has acceptable compression strength but it has poor performance under tensile and shear loading conditions. Numerical modelling is an alternative approach for studying the nonlinear behaviour of masonry structures such as adobe. The lack of a comprehensive experimental database on the adobe material properties motivated the study developed here. A set of a reference material parameters for the adobe were obtained from a calibration of numerical models based on a quasi-static cyclic in-plane test on full-scale adobe wall representative of the typical Peruvian adobe constructions. The numerical modelling, within the micro and macro modelling approach, lead to a good prediction of the in-plane seismic capacity and of the damage evolution in the adobe wall considered.