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Representative elementary volume

About: Representative elementary volume is a research topic. Over the lifetime, 4105 publications have been published within this topic receiving 86863 citations.


Papers
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Journal ArticleDOI
TL;DR: In this paper, a two-step homogenization approach for evaluating the elastic properties of fiber reinforced concrete (FRC) unit cells is described. And the results, obtained using the presented algorithm, are in very good agreement with experimental results.

75 citations

Journal ArticleDOI
TL;DR: In this article, a model-based analysis of thermo-oxidative behavior in high-temperature polymer matrix composite (HTPMC) materials is presented, which is characterized from dimensional changes observed during aging in inert (argon) and oxidative (air) environments.
Abstract: This paper presents a model-based analysis of thermo-oxidative behavior in high-temperature polymer matrix composite (HTPMC) materials. The thermo-oxidative behavior of the composite differs from that of the constituents as the composite microstructure, the fiber/matrix interphase/interface behavior and damage mechanisms introduce anisotropy in the diffusion and oxidation behavior. Three-dimensional Galerkin finite element methods (GFEM) that model the thermo-oxidative layer growth with time are used together with homogenization techniques to analyze lamina-scale behavior using representative volume elements (RVEs). Thermo-oxidation-induced shrinkage is characterized from dimensional changes observed during aging in inert (argon) and oxidative (air) environments. Temperature-dependent macro-scale (bulk) mechanical testing and nano-indentation techniques are used for characterizing the effect of oxidative aging on modulus evolution. The stress and deformation fields in a single ply unidirectional lamina are studied using coupled oxidation evolution and non-linear elastic deformation analyses. Deformation and stress states are shown as a function of the aging time. While the thermo-oxidative processes are controlled by diffusion phenomenon in neat resin, the onset and propagation of damage determines the oxidative response of an HTPMC.

75 citations

Book ChapterDOI
01 Jan 1984
TL;DR: In this article, the authors present the methodology of developing the complete description of transport phenomena in a multiphase, deformable porous medium, and demonstrate this methodology by applying it to the transport of such extensive quantities as volume, mass, component of a phase, momentum and heat.
Abstract: The objective of this review is to present the methodology of developing the complete description of transport phenomena in a multiphase, deformable porous medium, and to demonstrate this methodology by applying it to the transport of such extensive quantities as volume, mass, component of a phase, momentum and heat

74 citations

Journal ArticleDOI
TL;DR: In this article, a multiscale extended finite element method (MsXFEM) is used to determine the effective elastic properties of heterogeneous materials and the elastic properties are calculated by analyzing a representative volume element (RVE) under periodic boundary conditions.

74 citations

Journal ArticleDOI
TL;DR: In this article, a representative elementary volume (REV) in epoxy syntactic foams was generated to incorporate randomly distributed glass microballoons that followed a log-normal size distribution.
Abstract: A representative elementary volume (REV) in epoxy syntactic foams was generated to incorporate randomly distributed glass microballoons that followed a log-normal size distribution. Finite element modelling of the REV foam was developed and experimentally validated to investigate the elastic behaviour and failure mechanism in the foams with different microballoon volume fractions (V). The localised stresses concentrate in various zones within the foam, and can cause the vertical splitting fracture of microballoons and the micro-crack formation in the matrix. Dependent on the microballoon volume fraction, micro-cracks can propagate to join adjacent micro-cracks and voids left by fractured microballoons, and finally develop into a macro-crack either in the preferred longitudinal (for low V) or diagonal (for high V) directions. This is consistent with the macroscopic observations of the fracture process in the foam specimens. It was also found that elastic characteristics of the foam vary with microballoon volume fractions.

74 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023134
2022241
2021243
2020293
2019287
2018253