Multiscale composite FEM modeling

Multiscale modeling of oxidative degradation of C-SiC composite

A multi-scale model has been developed for modeling thermal oxidation of ceramic matrix/carbon ber composites used in high temperature environments. The competition between transport of oxygen and carbon dioxide between the exposed carbon bers and the external environment is simulated using a mass conservation equation in the inert porous matrix. Oxidation at the scale of individual carbon bers...

Multiscale Surrogate Modeling and Uncertainty Quantification for Periodic Composite Structures

Computational modeling of the structural behavior of continuous fiber composite materials often takes into account the periodicity of the underlying micro-structure. A well established method dealing with the structural behavior of periodic micro-structures is the socalled Asymptotic Expansion Homogenization (AEH). By considering a periodic perturbation of the material displacement, scale bridg...

A FEM Multiscale Homogenization Procedure using Nanoindentation for High Performance Concrete

This paper aims to develop a numerical multiscale homogenization method for prediction of elasto-viscoplastic properties of a high performance concrete (HPC). The homogenization procedure is separated into two-levels according to the microstructure of the HPC: the mortar or matrix level and the concrete level. The elasto-viscoplastic behavior of individual microstructural phases of the matrix a...

Application of the multiscale FEM to the modeling of cancellous bone.

This paper considers the application of multiscale finite element method (FEM) to the modeling of cancellous bone as an alternative for Biot's model, the main intention of which is to decrease the extent of the necessary laboratory tests. At the beginning, the paper gives a brief explanation of the multiscale concept and thereafter focuses on the modeling of the representative volume element an...

Multiscale modeling