Inverse Hybrid Method for Determining Explosive Loading on Plates Due to Buried Mines

Inverse Hybrid Method for Determining Explosive Loading on Plates Due to Buried Mines

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Due to the changing face of warfare there is an ever growing need to protect the underside of combat vehicles from mine blasts. This research effort presents a new method to better characterize the pressure profiles experienced by a plate as the blast develops. The explosive deformation of a small-scale plate was recorded using synchronized high-speed digital cameras, and then analyzed using 3D Digital Image Correlation software. Time-varying pressure profiles were input into an axisymmetric FEM simulation by fitting curves to data obtained from tests using Kolsky bars to measure pressures. These were then modified to find possible profiles that produce the measured deformations. It was discovered that the final deformation cannot be determined from only total impulse or peak pressures, it is very sensitive to the time and spatial decay of the pressures, and a deforming plate travels with greater initial velocity than a nondeforming plate of equal mass.Unlike 3D DIC, manual tracking requires the deformation to be approximately planar, and the camera to be set up normal ... inclinometer was not available, so a photograph was taken of the Phantom camera relative to the horizontal position , anbsp;...


Title:Inverse Hybrid Method for Determining Explosive Loading on Plates Due to Buried Mines
Author: Damien Carl Bretall
Publisher:ProQuest - 2007
ISBN-13:

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