Accession Number:

AD0265176

Title:

CREEP TORSION OF NON-CIRCULAR BARS

Descriptive Note:

Corporate Author:

ILLINOIS UNIV URBANA ENGINEERING EXPERIMENT STATION

Personal Author(s):

• GUBSER,JOHN L.
• SIDEBOTTOM,OMAR M.

Report Date:

1961-08-01

Pagination or Media Count:

1.0

Abstract:

The report is a theoretical and experimental investigation of the creep-torsion of non-circular prismatic bars. The theory is developed using an energy approach and assumes the material is homogeneous, isotropic and incompressible, the deformations are small and the total theory is valid. An isochronous stress-strain diagram, which is approximated by an arc hyperbolic sine function, is used to represent the stress-strain-time relation for the material. As a closed solution could not be obtained, the Rayleigh-Ritz procedure was used. Experimental data was obtained by applying a pure torque to specimens of high density polyethylene. Four cross-sectional shapes were tested, a square, a rectangle, a triangle and an I- section. The theory and experiment in most cases were in good agreement. Author

Descriptors:

• *RODS
• CONTROLLED ATMOSPHERES
• CREEP
• DEFORMATION
• ELASTIC PROPERTIES
• EQUATIONS
• ETHYLENES
• MATHEMATICAL ANALYSIS
• MECHANICAL PROPERTIES
• MECHANICS
• PHYSICAL PROPERTIES
• PLASTIC PROPERTIES
• POLYMERS
• STRESSES
• TEST METHODS
• THEORY
• TORQUE

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE