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Title:Creep torsion of non circular bars
Author(s):Gubser, John L.; Sidebottom, Omar M.
Abstract:This 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 strain 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 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.
Issue Date:1961-08
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 198
Genre:Technical Report
Rights Information:Copyright 1961 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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