Accession Number : AD0902041

Title :   Modifications to the Help Code for Modeling Plugging Failure: User's Manual.

Descriptive Note : Final rept. 16 Feb 71-Mar 72,

Corporate Author : SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA

Personal Author(s) : Hageman, Laura J. ; Sedgwick, Robert T.

Report Date : JUN 1972

Pagination or Media Count : 40

Abstract : To simulate plugging failure, the HELP code essentially generates a plug package the shape and mass of which are determined by a plastic work failure criterion and by the associated angle of maximum shearing stress. The vertical interface between the plug and target packages is treated as a slip surface, allowing the plug and target to have relative motion tangent to that interface. This report describes the additions and changes made to the documented version of the HELP code for evolving a plug package as well as a slip surface. (Author)

Descriptors :   *COMPUTER PROGRAMS), (*TWO DIMENSIONAL FLOW, (*TERMINAL BALLISTICS, TWO DIMENSIONAL FLOW), MATHEMATICAL MODELS, IMPACT SHOCK, TARGETS, FAILURE(MECHANICS), FLUID FLOW, PLASTIC PROPERTIES, ELASTIC PROPERTIES, PENETRATION, SHEAR STRESSES, SUBROUTINES, PROJECTILES, INTERFACES, TIME SERIES ANALYSIS.

Subject Categories : Computer Programming and Software
      Ballistics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE