Affiliations: Laboratoire Jacques-Louis Lions, Université Pierre et Marie Curie, Paris, France. E-mail: griso@ann.jussieu.fr | European Centre of Excellence, NTIS New Technologies for Information Society, Faculty of Applied Sciences, University of West Bohemia in Pilsen, Plzeň, Czech Republic. E-mail: rohan@kme.zcu.cz
Note: [] Corresponding author: Eduard Rohan, European Centre of Excellence, NTIS New Technologies for Information Society, Faculty of Applied Sciences, University of West Bohemia in Pilsen, Univerzitní 8, 30614 Plzeň, Czech Republic. E-mail: rohan@kme.zcu.cz
Abstract: Models of homogenized fluid-saturated dual-porous media with weak, or strong discontinuity interfaces (resembling fissures) are derived using the periodic unfolding method. Stress discontinuities at the interfaces are admitted, requesting further restrictions on the applied external forces. The limit models, obtained by a rigorous asymptotic analysis, reflect some non-local effects inherited from the microstructural interactions. In view of obtaining the a priori estimates, standard approaches based on smooth extensions, well fitted for perforated or high-contrast media, cannot be adopted for fissured domains. Therefore, a new approach is developed which enables to control the norm of some “off-diagonal” terms which in the model equations are generated by the interfaces and are not involved in the energy-related expressions.
