Accession Number:

ADA055538

Title:

Stress Analysis of Ceramic Gas Turbine Blades by the Finite Element Method. Part II.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

• Preisel,John H. , Jr

Report Date:

1978-03-01

Pagination or Media Count:

130.0

Abstract:

The complex geometry of many parts of a ceramic gas turbine engine and the need to known the stresses in these parts to a high degree of accuracy indicate that the finite element method should be employed. One analysis code used a finite element program based on an isoparametric 12-node brick. This allowed quadratic variation in one coordinate direction, but only linear variation in the other two coordinate directions. This introduced an artificial stiffness into the structure. This study was made to determine the effects of using a totally quadratic isoparametric brick, vice one which is quadratic in only one direction. A distributed load preprocessor was also developed and tested. FORTRAN IV was used throughout. Author

Descriptors:

• *STRESS ANALYSIS
• *FINITE ELEMENT ANALYSIS
• *CERAMIC MATERIALS
• *GAS TURBINE BLADES
• MATHEMATICAL MODELS
• COMPUTERIZED SIMULATION
• THESES
• BENDING
• AIRFOILS
• FORTRAN
• THERMAL STRESSES
• CENTRIFUGAL FORCE

Subject Categories:

• Ceramics, Refractories and Glass
• Computer Programming and Software
• Mechanics
• Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE