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On elastic-plastic analysis of an overloaded breech ring using NASTRANThe piece-wise linear analysis option of the NASTRAN code was used to analyze a photoplastic model for a sliding breech mechanism. A two dimensional finite element representation for the breech ring was chosen and the material was made of polycarbonate resin. The aluminum block was regarded as rigid and the width of contact was assumed to remain unchanged during loading. The displacements and stresses in the breech ring were obtained for loading in the elastic as well as plastic range. The maximum tensile stresses before and after complete unloading were obtained and compared with numerical and experimental results.
Document ID
19830004192
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chen, P. C. T.
(Army Armament Research and Development Command Watervliet, NY, United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1982
Publication Information
Publication: Georgia Univ. 10th NASTRAN User's Colloq.
Subject Category
Structural Mechanics
Accession Number
83N12462
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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