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- W4366993091 abstract "The paper presents two-scale numerical algorithms for stress–strain analysis of porous media featured by self-contact at pore level. The porosity is constituted as a periodic lattice generated by a representative cell consisting of elastic skeleton and a void pore. Unilateral frictionless contact is considered between opposing surfaces of the pore. For the homogenized model derived in our previous work, we justify incremental formulations and propose several variants of two-scale algorithms which commute iteratively solving of the micro- and the macro-level contact subproblems. A dual formulation which takes advantage of the assumed microstructure periodicity and a small deformation framework, is derived for the contact problems at the micro-level. This enables to apply the semi-smooth Newton method. For the global, macrolevel step two alternatives are tested; one relying on a frozen contact identified at the microlevel, the other based on a reduced contact associated with boundaries of contact sets. Numerical examples of 2D deforming structures are presented as a proof of the concept." @default.
- W4366993091 created "2023-04-27" @default.
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- W4366993091 date "2023-11-01" @default.
- W4366993091 modified "2023-09-25" @default.
- W4366993091 title "Homogenization and numerical algorithms for two-scale modeling of porous media with self-contact in micropores" @default.
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- W4366993091 doi "https://doi.org/10.1016/j.cam.2023.115276" @default.
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