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Theoretical model for fluid-solid coupling in porous materials

Guyer, Robert A. and Kim, H. Alicia ORCID: 2015. Theoretical model for fluid-solid coupling in porous materials. Physical Review E 91 (4) , 042406. 10.1103/PhysRevE.91.042406

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This paper introduces a unifying theory for describing complex behavior for porous materials. The key ingredients are the stored energy in solid-fluid interaction as well as the solid-solid and fluid-fluid interactions. A finite element formulation is employed which naturally accounts for the pore-pore network effects and is easily applicable to most pore geometries such as cellular solids and foams. The interactions, built in at the finite element level, give rise to the mechanical response of the macroscopic material unit. Through numerical studies, we show that there is strong coupling between fluid and solid that induces complex mechanical response, i.e., hysteresis and anisotropy. It is demonstrated that hysteresis arises directly from the fluid-solid coupling. We term this type of hysteresis emergent hysteresis.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: American Physical Society
ISSN: 1063-651X
Last Modified: 01 Nov 2022 10:24

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