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- W2792693358 abstract "In this paper, a digital-image-driven stochastic homogenization method is developed to analyze elastic heterogeneous media such as recycled aggregate concrete (RAC), etc. This linking can be accomplished in an efficient manner by exploiting the excellent synergy of finite pixel-element method and Monte Carlo simulation for the computation of the effective properties of the random five-phase composite. The pixel-point discretization of system geometry is used for the approximation of the mechanical response of the elastic heterogeneous microstructure. Using nanoindentation technique and scanning electron microscopy, tens of digital images of modulus map of the five-phase heterogeneous material are made. Using the moving window technique and the Monte Carlo method, the random elastic moduli of the five phases at micro-scale are obtained. Then the effective elastic modulus of the meso-scale representative volume element (RVE) is computed based on spectral stochastic finite element method. Finally, the effective modulus is used to analyze the global behavior of RVE at macro-scale. Then the finite pixel-element method is used to investigate the effect of microscopic covariance noise on the global material properties, as well as the computational efficiency. The results show that the digital image method is an accurate and efficient tool to investigate the random material properties across scales." @default.
- W2792693358 created "2018-03-29" @default.
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- W2792693358 creator A5061781106 @default.
- W2792693358 date "2019-07-26" @default.
- W2792693358 modified "2023-10-16" @default.
- W2792693358 title "Digital-Image-Driven Stochastic Homogenization for Recycled Aggregate Concrete Based on Material Microstructure" @default.
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- W2792693358 doi "https://doi.org/10.1142/s0219876218501049" @default.
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