Accession Number : ADA302050

Title :   Analysis of Graphite/Polyimide Rail Shear Specimens Subjected to Mechanical and Thermal Loading.

Descriptive Note : Contract rept.,

Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF AEROSPACE AND OCE AN ENGINEERING

Personal Author(s) : Weisshaar, Terry A. ; Garcia, Ramon

PDF Url : ADA302050

Report Date : MAR 1979

Pagination or Media Count : 56

Abstract : This report discusses the results of a two-dimensional, linear-elastic, finite element analysis of selected graphite/polyimide rail shear test specimens. The study includes the analysis of mechanical loading and the effect of heating the specimen to a uniform temperature. The presence of specimen free edges and their influence on the accuracy of the rail shear test is discussed. Parameters in this analysis include the length-to-width ratio of the specimen and the ply layup for symmetric, balanced laminates. Results presented include shear and normal stress distributions and the deflection behavior of various specimens caused by the mechanical loading and elevated temperature. (MM)

Descriptors :   *LAMINATES, *POLYIMIDE PLASTICS, LOAD DISTRIBUTION, STRESS ANALYSIS, COMPOSITE MATERIALS, FINITE ELEMENT ANALYSIS, RAILS, DEFORMATION, ELASTIC PROPERTIES, DEFLECTION, GRAPHITE, THERMAL EXPANSION, SHEAR STRESSES, THERMAL STRESSES, ASPECT RATIO.

Subject Categories : Laminates and Composite Materials
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE