Penetrator Impact Studies of Soil/Concrete
Final rept. 1 Dec 1976-30 Nov 1977
FLORIDA UNIV GAINESVILLE DEPT OF ENGINEERING SCIENCES
Pagination or Media Count:
The terradynamic trajectories of various types of penetrators impacting Eglin sand in a vertical direction is reported on. Included in the studies are the influence of changes in the initial projectile velocity, soil conditions, and impactor nose shapes. By means of X-ray radiography the vertical trajectory of the impactor has been recorded for analysis. These data have been used in the classical Poncelet penetration equations considering the force to be functionally related to a constant and velocity squared term. Further analysis, using the experimental data obtained, as applied to a multidegree of freedom rigid body model and a cavity expansion model are also discussed. As an integral part of the current studies, the dynamic fracture of concrete bars has been examined in order to characterize the spall behavior of such specimens under dynamic loads. Finally, in order to examine the stress transmission characterization of various nose shaped penetrators, a series of dynamic loading tests using the Hopkinson Pressure Bar system have been reported on.
- Mining Engineering
- Ammunition and Explosives