Accession Number : ADA301851

Title :   Analysis of the Stress State in an Iosipescu Shear Test Specimen.

Descriptive Note : Final rept.,

Corporate Author : WYOMING UNIV LARAMIE DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Walrath, David E. ; Adams, Donald F.

PDF Url : ADA301851

Report Date : JUN 1983

Pagination or Media Count : 85

Abstract : The state of stress in an Iosipescu shear test specimen is analyzed, utilizing a finite element computer program. The influence of test fixture configuration on this stress state is included. Variations of the standard specimen configuration, including notch depth, notch angle, and notch root radius are modeled. The purpose is to establish guidelines for a specimen geometry which will accommodate highly orthotropic materials while minimizing stress distribution nonuniformities. Materials ranging from isotropic to highly orthotropic are considered. An optimum specimen configuration is suggested, along with changes in the test fixture. (AN)

Descriptors :   *STRESS ANALYSIS, *FIBER REINFORCED COMPOSITES, *SHEAR TESTS, STRESS STRAIN RELATIONS, MATHEMATICAL MODELS, LOAD DISTRIBUTION, OPTIMIZATION, LAMINATES, FINITE ELEMENT ANALYSIS, THREE DIMENSIONAL, SHEAR STRESSES, BENDING STRESS, GRAPHITE EPOXY COMPOSITES, NOTCH TOUGHNESS, CONTOURS, TEST FIXTURES, STRESS CONCENTRATION.

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE