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Computational homogenization of coupled consolidation problems in micro-heterogeneous porous media

Fang Su (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Fredrik Larsson (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Kenneth Runesson (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik)
International Journal for Numerical Methods in Engineering (0029-5981). Vol. 88 (2011), 11, p. 1198-1218.
[Artikel, refereegranskad vetenskaplig]

Computational homogenization is exploited for the analysis of transient hydro-mechanically coupled problems subjected to quasistatic loading (consolidation) in micro-heterogeneous porous solids. The classical approach of first-order homogenization is adopted in the spatial domain on representative volume elements (RVE), which are introduced in quadrature points in standard fashion. Along with the classical averages, a higher order conservation quantity is obtained. An iterative FE 2-algorithm is devised for the case of nonlinear permeability and storage coefficients, and it is applied to pore pressure changes in asphalt-concrete (particle composite). Various parametric studies are carried out, in particular with respect to the influence of the characteristics (size, particle arrangement) of the RVE's.

Nyckelord: computational homogenization, coupled consolidation, fe2, bodies, scales, size



Denna post skapades 2012-01-26. Senast ändrad 2015-06-12.
CPL Pubid: 154422

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Material- och beräkningsmekanik (2005-2017)

Ämnesområden

Teknisk mekanik

Chalmers infrastruktur