Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Meso-scale simulation of concrete multiaxial behaviour
Concrete is a heterogeneous structural material whose constitutive behaviour is strictly depending on the mechanical properties of the aggregates and the mortar. Its behaviour is often macroscopically characterised by assigning homogenised mechanical properties. A number of methods are devoted to the prediction of the mechanical properties of the composite material by means of meso-scale analysis. The paper concerns a new meso-scale model of cementitious materials. The numerical description of the meso-scale structure is attained using a random method that allocates at each Gauss point of the finite element discretisation of the Representative Volume Element a specific phase of the mixture: aggregate, mortar and void. Each phase is characterised by a specific constitutive model. The method is tested with numerical simulations of cyclic uniaxial compression tests and of multiaxial compression tests, the latter leading to the generation of a biaxial strength domain, for different values of the confinement pressure, that is found to be in good agreement with concrete experimental domains.
Meso-scale simulation of concrete multiaxial behaviour
Concrete is a heterogeneous structural material whose constitutive behaviour is strictly depending on the mechanical properties of the aggregates and the mortar. Its behaviour is often macroscopically characterised by assigning homogenised mechanical properties. A number of methods are devoted to the prediction of the mechanical properties of the composite material by means of meso-scale analysis. The paper concerns a new meso-scale model of cementitious materials. The numerical description of the meso-scale structure is attained using a random method that allocates at each Gauss point of the finite element discretisation of the Representative Volume Element a specific phase of the mixture: aggregate, mortar and void. Each phase is characterised by a specific constitutive model. The method is tested with numerical simulations of cyclic uniaxial compression tests and of multiaxial compression tests, the latter leading to the generation of a biaxial strength domain, for different values of the confinement pressure, that is found to be in good agreement with concrete experimental domains.
Meso-scale simulation of concrete multiaxial behaviour
Contrafatto, Loredana (Autor:in) / Cuomo, Massimo (Autor:in) / Greco, Leopoldo (Autor:in)
European Journal of Environmental and Civil Engineering ; 21 ; 896-911
03.08.2017
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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