Accession Number:

AD0783209

Title:

Thermostructural Analysis of Three-Dimensional Orthogonally Reinforced Carbon-Carbon Materials.

Descriptive Note:

Final rept. Jan-Mar 73,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF ENGINEERING SCIENCE OPERATIONS

Personal Author(s):

Report Date:

1974-06-05

Pagination or Media Count:

30.0

Abstract:

Thermostructural analyses for reentry vehicle nose tips of three-dimensional, orthogonally reinforced, pyrolyzed carbon-carbon materials generally have been performed with the assumption that the material is cylindrically orthotropic. Examination of the materials actual heterogeneous construction indicates noncylindrical orthotropy with a circumferential variation of properties in a plane normal to the billet axis. A technique is used which recognizes the actual noncylindrical orthotropic behavior of these carbon-carbons and which provides a consistent set of constitutive constants from test data. Analytical results are provided for a ring and a nose tip which indicate the cylindrically orthotropic assumption can lead to very unconservative predictions of critical stresses and strains. Author

Subject Categories:

  • Laminates and Composite Materials
  • Guided Missiles
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE