Accession Number : ADB020167


Title :   Study of Penetration Technology


Descriptive Note : Final rept. 1 Jan 1975-29 Sep 1976


Corporate Author : FLORIDA UNIV GAINESVILLE DEPT OF ENGINEERING SCIENCES


Personal Author(s) : Malvern, L E ; Sierakowski, R L ; Ross, C A ; Milton, J E ; Ting, C S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/b020167.pdf


Report Date : Nov 1976


Pagination or Media Count : 237


Abstract : A study of the performance characteristics of terradynamic impactors is reported on, including the influence of initial input velocity, impactor nose shape, and different soil conditions in Eglin sand. The investigation also included evaluation of various sensing devices for nonintrusive measurement of vehicle motions during the penetration process. The most useful of the experimental tools were found to be flash X-Ray radiography. Additional devices evaluated were magnetic coils, microwaves, capacitive AND OTHER PRESSURE TRANSDUCERS, STRAIN GAGES ON TEST CHAMBER WALLS, AND BREAKING-WIRE SENSORS. Data analysis was performed by using classical Poncelet predictive techniques, empirical Sandia penetration equations, semi-analytical Cavity Expansion Theory, and a three dimensional code for trajectory analysis developed under this contract for use with an assumed three dimensional force law. To obtain essential input to the aforementioned models, a study of the acoustic wave velocity in a sand medium was made, and results are included in this report.


Descriptors :   *PROJECTILE TRAJECTORIES , FIRING TESTS(ORDNANCE) , SAND , IMPACT SHOCK , MATHEMATICAL PREDICTION , YIELD STRENGTH , SOIL DYNAMICS , COMPACTING , CARTRIDGES , EARTH PENETRATING DEVICES


Subject Categories : Soil Mechanics
      Armor


Distribution Statement : APPROVED FOR PUBLIC RELEASE