Accession Number : ADA263456


Title :   Implications of Gun Propellant Bed Rheology


Descriptive Note : Final rept. Dec 1990-Dec 1991


Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD


Personal Author(s) : Conroy, Paul J ; Kooker, Douglas E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a263456.pdf


Report Date : Feb 1993


Pagination or Media Count : 42


Abstract : Simulation of the interior ballistic cycle for certain gun systems can sometimes predict the growth of pressure waves to potentially dangerous amplitudes. Such predictions involve the propagation of large amplitude stress waves through a compressed aggregate of propellant grains. The fidelity of the simulation will depend upon the accuracy of the constitutive behavior assigned to the propellant bed. This report examines the current formulation in Gough's NOVA-series codes, and then explores the implications on effective wave propagation speed for two different materials: a brittle crystalline material (HMX) and a double-base ball propellant. The results indicate the potential importance of solid-phase compressibility at stress levels above 100 MPa.


Descriptors :   *GUN PROPELLANTS , *INTERIOR BALLISTICS , VELOCITY , SIMULATION , PREDICTIONS , ACCURACY , CRYSTALLIZATION , BRITTLENESS , WAVE PROPAGATION , COMPRESSIVE PROPERTIES , HMX , PROPELLANT GRAINS , SOLID PHASES , STRESS WAVES , PRESSURE , RHEOLOGY , BEHAVIOR , GUNS , AMPLITUDE , BALLISTICS


Subject Categories : Ammunition and Explosives
      Guns
      Ballistics


Distribution Statement : APPROVED FOR PUBLIC RELEASE