Accession Number : AD0774255

Title :   Application of Nonlinear Analysis (Plastic) to NASTRAN using RING Elements Including Aspect Ratio Effect.

Descriptive Note : Technical note,

Corporate Author : FRANKFORD ARSENAL PHILADELPHIA PA

Personal Author(s) : Yang,J. C. S. ; Frederick,Diana

Report Date : AUG 1973

Pagination or Media Count : 91

Abstract : NASA Structural Analysis (NASTRAN) Computer Program is a general purpose computer program developed by the National Aeronautics and Space Administration. In order to model cartridge case problems, three studies were performed to test the applicability of NASTRAN. Study 1 modified NASTRAN to perform a nonlinear analysis (plastic) and include RING elements. Study 2 demonstrated that large aspect ratios in RING elements can safely be ignored. Study 3 showed that varying element sizes within a model do not affect the deformations or stresses. (Author)

Descriptors :   *Cartridge cases, *Stresses, *Plastic properties, Structural properties, Computer programs

Subject Categories : Computer Programming and Software
      Ammunition and Explosives
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE