Finite element-based micromechanical modeling of the influence of phase properties on the elastic response of cementitious mortars
作者： Sumanta Das , Amit Maroli , Narayanan Neithalath
DOI: 10.1016/J.CONBUILDMAT.2016.09.153
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摘要: Abstract This study reports the influence of inclusion stiffness and its distribution on stress distributions in microstructural phases different cementitious mortars using microstructure-guided finite element simulations. Randomly generated periodic microstructures with single/multiple sizes random spatial distribution, subjected to boundary conditions a strain-controlled virtual testing regime are chosen for final analysis. Numerical simulations reveal: (i) differences locations/magnitudes concentrations as function size (ii) sometimes detrimental matrix interface stiffening/strengthening overall composite response, leading material design strategies when non-conventional inclusions used systems special properties. The constitutive behavior linear elastic is extracted based predicted dominant principal stresses strains representative area element. Thus, addition phase stresses, this methodology also provides predictions modulus, which observed be more reliable than those obtained from analytical prediction models.
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