Accession Number : AD0468198


Title :   EFFECTS OF MICRO-STRUCTURE ON THE STRESS CONCENTRATION AT A SPHERICAL CAVITY.


Descriptive Note : Technical rept.,


Corporate Author : COLUMBIA UNIV NEW YORK DEPT OF CIVIL ENGINEERING AND ENGINEERING MECHANICS


Personal Author(s) : Bleustein,J. L.


Report Date : FEB 1965


Pagination or Media Count : 41


Abstract : In this paper the boundary-value problem for the stress concentration at a spherical cavity in a field of isotropic tension is solved within the framework of Mindlin's theory of an elastic continum with a deformable micro-structure. It is found that the stress concentration factor is moderately larger than the 3/2 of classical elasticity for a wide range of material properties and ratios of radius of cavity to a length parameter of the material - with a critical ratio, nearly independent of the remaining material properties, for which the stress concentration factor is a maximum. (Author)


Descriptors :   (*STRESSES, SPHERES), (*MICROSTRUCTURE, STRESSES), (*SPHERES, STRESSES), BOUNDARY VALUE PROBLEMS, ELASTIC PROPERTIES, DEFORMATION, EQUATIONS, ANISOTROPY, SHEAR STRESSES, HYDROSTATIC PRESSURE, MECHANICAL WAVES, PROPAGATION


Distribution Statement : APPROVED FOR PUBLIC RELEASE