Author(s)

M.S. Hoo Fatt, X. Ouyang & R.J. Dinan

Abstract

Blast response of walls retrofitted with M. S. Hoo Fatt1, X. Ouyang1 & R. J. Dinan2 1Department of Mechanical Engineering, The University of Akron, USA 2Force Protection Branch, Air Force Research Laboratory, Tyndall Air Force Base, USA Abstract Recent tests at Tyndall Air Force Research Laboratory show that an elastomercoated to the inside wall of a building can offer significant protection for occupants by keeping wall fragments together and shielding out blast debris. In this paper, we develop an equivalent single degree-of-freedom model that can be used to predict dynamic response of a polymer-retrofitted concrete brick wall subjected to a stand-off explosion. As an example, we consider the blast response of a 10 ft-square, 8 in-thick concrete brick wall coated with a 0.083 inthick layer of polyurea. Explosive field tests with a uniformly-distributed pressure pulse of 40 psi peak value and 20 ms pulse duration indicate that the retrofitted wall reaches a maximum deflection of about 7 in. Ou

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