Response of a nanofluid system based on a porous medium to an impact loading

Abstract

New results are presented for the response of three nanofluid systems to an impact loading. It has been shown that the main criteria of the efficiency of such systems are the force and time of loading on a protected object, as well as the fraction of the impact/blast energy absorbed by such a system. The efficiency of energy and momentum absorption in the performed experiments was ∼74–98%. Conditions have been determined under which the efficiency of energy and momentum absorption increases with the impact energy. The performed studies for three different systems have indicated that these conditions are universal. It has been shown on the example of these systems that the use of a «nanoporous medium–nonwetting liquid» system as the main element of devices for impact/blast mitigation makes it possible to control the loading force on the protected object (to ensure the loading force always below the allowed level) and to hold a high energy capacity.