Accession Number:

ADA048301

Title:

Residual Stresses in an Anisotropic Thick Hollow Cylinder of Chemically Vapor-Deposited Material Due to Uniform Cool-Down

Descriptive Note:

Final rept.

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA

Personal Author(s):

Report Date:

1977-10-01

Pagination or Media Count:

32.0

Abstract:

Residual stresses are derived for a transversely anisotropic thick hollow cylinder which has been chemically vapor deposited at an elevated temperature. Such stresses arise because of the differential rates of contraction in the radial and tangential directions and the anisotropic elastic constants. Residual stress distributions for cylinders with a wall ratio outer to inner radius of 1.30 of pyrolytic graphite and pyrolytic silicon carbide alpha SiC are presented as a function of the radius to inner radius. The effect of the variation of the elastic anisotropy on the tangential stress at the inner and outer radii is presented as a function of the wall ratio. Finally, the tangential and axial stresses at the inner and outer radii and the maximum radial stress of chemically vapor-deposited alpha SiC are presented as a function of the wall ratio.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE