Now showing items 1-17 of 17

    • Analytical micro-modeling of masonry periodic unit cells : elastic properties 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (2015-09-01)
      Article
      Open Access
      A model for the analysis of masonry periodic unit cells based on detailed micro-modeling principles is presented: an analytical model capable of calculating the orthotropic elastic properties of masonry composites. Several ...
    • Compressive strength and elasticity of pure lime mortar masonry 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (2016-03)
      Article
      Open Access
      The procedure and findings of an experimental campaign for the mechanical characterization of brick masonry with lime mortar joints are presented. The campaign includes the determination of the properties of the constituent ...
    • Compressive testing of an early 20th century brick masonry pillar 

      Drougkas, Anastasios; Molins i Borrell, Climent; Roca Fabregat, Pedro; Alegre Heitzmann, Vicente (2016-06)
      Article
      Open Access
      An experimental campaign involving the compressive testing of a brick masonry pillar extracted from a historical building is presented in this paper. The test procedure and the instrumentation are designed in order to ...
    • Derivation of the properties of masonry through micro-modeling techniques 

      Drougkas, Anastasios (Universitat Politècnica de Catalunya, 2015-04-20)
      Doctoral thesis
      Open Access
      The aim of this thesis is to present a framework for the application of micro-modeling techniques for the analysis of unreinforced masonry structures. Finite element analyses of case studies from the literature are carried ...
    • Experimental analysis and detailed micro-modeling of masonry walls subjected to in-plane shear 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (Elsevier, 2019-01)
      Article
      Restricted access - publisher's policy
      A detailed experimental campaign is presented dealing with masonry walls subjected to shear. The masonry walls are modeled using detailed micro-modeling techniques. Good agreement is found between the experimental and ...
    • Investigation of the masonry pillars of a modernist building of Hospital de sant Pau, Barcelona 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent; Alegre Heitzmann, Vicente (2014)
      Conference report
      Restricted access - publisher's policy
      The methodology employed and the results obtained from an experimental campaign to determine the compressive strength of a masonry pillar extracted from an early 20th century building are presented. The samples of the ...
    • Investigation of the use of iron in construction from antiquity to the technical revolution 

      Drougkas, Anastasios (Universitat Politècnica de Catalunya, 2009-07)
      Master thesis
      Open Access
      En el contexto de la presente disertación, el uso del hierro en construcciones ha sido investigado. Mediante el estudio de antiguos y modernos documentos disponibles sobre el tema, este trabajo examina prácticas y conceptos ...
    • Masonry material characterization methodology for micro-modeling 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent; Alegre Heitzmann, Vicente (Universidade do Minho, 2014)
      Conference report
      Restricted access - publisher's policy
      Numerical and analytical micro-modeling of masonry structures requires knowledge of several elasticity and strength parameters of the constituent materials of the composite. Furthermore, when dealing with specimens produced ...
    • Material characterization and micro-modeling of a historic brick masonry pillar 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (Taylor & Francis, 2016-10)
      Article
      Restricted access - publisher's policy
      A masonry pillar composed of solid clay bricks, cement mortar and infill is extracted from a historical structure and tested in concentric compression. It is subjected to cyclic and monotonic loads up to compressive ...
    • Micro-mechanical modeling of masonry: parametric study 

      Roca Fabregat, Pedro; Molins i Borrell, Climent; Drougkas, Anastasios (CRC Press, 2016)
      Conference report
      Restricted access - publisher's policy
      Masonry structures, usually being composed of a repeating geometric pattern, lend themselves well to analysis using periodic unit cells. Based on stress and strain equilibriums and rational assumptions concerning the ...
    • Micro-modeling of stack bond masonry in compression using a plasticity law 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins, Climent (CIMNE, 2013)
      Conference report
      Open Access
      A set of experimental tests to determine the compressive strength of masonry stack prisms has been numerically simulated using a combined plasticity-smeared crack constitutive law employed in three-dimensional analysis.
    • Micro-modeling of stack bond masonry in compression using a plasticity law 

      Drougkas, Anastasios; Molins i Borrell, Climent; Roca Fabregat, Pedro (CIMNE, 2013)
      Conference report
      Open Access
      A set of experimental tests to determine the compressive strength of masonry stack prisms has been numerically simulated using a combined plasticity-smeared crack constitutive law employed in three-dimensional analysis. ...
    • Nonlinear micro-mechanical analysis of masonry periodic unit cells 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (2016-02)
      Article
      Open Access
      A model for the analysis of masonry periodic unit cells of several wall and pillar geometrical typologies is proposed. It is based on a micro-mechanical analysis of the masonry cell, which has been divided into cuboids, ...
    • Numerical micro-modeling simulation of masonry in compression 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (Universidade do Minho, 2014)
      Conference report
      Restricted access - publisher's policy
      Micro-modeling techniques for the simulation of masonry are a valuable tool, when combined with nonlinear constitutive laws, for the investigation of the behavior of structural masonry. Through the simulation of the behavior ...
    • Numerical modelling of masonry shear walls failure mechanisms 

      Drougkas, Anastasios; Pelà, Luca; Roca Fabregat, Pedro (2014)
      Conference report
      Restricted access - publisher's policy
      This paper presents an investigation on the ability of two alternative FE-based numerical methods to simulate the in-plane strength and collapse of brick masonry shear walls. The methods considered consist of a meso-model, ...
    • Numerical prediction of the behavior, strength and elasticity of masonry in compression 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (2015-05)
      Article
      Open Access
      The paper focuses on the numerical prediction of the compressive response of masonry by means of detailed micro-modeling techniques. In such a model, the material constituents (mortar and units) and the unit-mortar interfaces ...
    • Simulation of in-plane shear test on masonry walls using micro modeling tecniques 

      Drougkas, Anastasios; Roca Fabregat, Pedro; Molins i Borrell, Climent (2014)
      Conference report
      Restricted access - publisher's policy
      A series of experimental tests involving in-plane shear loading of masonry walls is numerically simulated using finite element detailed micro models. The experimental tests were performed on masonry walls composed of solid ...