Synergy between magneto-rheological fluids and aluminum foams. Prospective alternative for seismic damping
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AutorAguilera Portillo, Mónica; Santa Ana Lozada, P.; Figueroa, Ignacio A.; Suárez, M.A.; Delgado, Ángel V.; Iglesias, Guillermo R.
Magneto-rheological fluidDissipation of energySeismic damperMetal foamMagnetorheological analysis
Aguilera Portillo, M.; et al. Synergy between magneto-rheological fluids and aluminum foams. Prospective alternative for seismic damping. Journal of Intelligent Material Systems and Structures: on line (2015). 
PatrocinadorProyectos PE2012-FQM694 (Junta de Andalucía, Spain), FIS2013-47666-C3-1-R (MINECO, Spain), SENER-CONACYT "151496" (UNAM Mexico), CONACYT National Quality Graduate Program
This article presents the experimental study of a preliminary investigation of a seismic damper device aimed at improving the behavior of structures when subjected to earthquakes. The damper is the result of a binomial material formed by aluminum foam with pores 1 mm in diameter, wetted by a magnetorheological fluid (MRF). The objective of the present work is to explore the synergy between the two components in a magnetorheological test, and to evaluate the effect of the Al foam pores in the structure buildup of the fluid. The analysis is completed with a compressive test carried out on the MRF-filled foam in the presence of a magnetic field. This kind of test demonstrates that the deformation of the foam for very small loads is limited by the hardening of the fluid because of its MR response. The results of this research suggest that there is a mutual benefit between the components of the device, presumably leading to an enhanced dissipation of vibration energy.