University of Illinois Urbana-Champaign

Inelastic design of load carrying members part 1; theoretical and experimental analyses of circular cross section torsion tension members made of materials that creep

Dharmarajan, S.; Sidebottom, O.M.

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https://hdl.handle.net/2142/111885

Description

Title
Inelastic design of load carrying members part 1; theoretical and experimental analyses of circular cross section torsion tension members made of materials that creep
Author(s)
  • Dharmarajan, S.
  • Sidebottom, O.M.
Issue Date
1960-07
Keyword(s)
  • Inelastic Design
  • Load Carrying
Abstract
This investigation presents a new approach to the problem of multiaxial creep. The theory is based on the usual assumptions; namely, the directions of the principal stresses and strains coincide, the Henky-Mises flow condition is valid, and the material is incompressible. It is proposed that load-deformation relations be derived for a specified time so that the theory is independent of time. For uniaxial state of stress the flow condition was assumed to be the isochronous stress-strain diagram obtained from constant stress, tension and compression creep curves. The torsion-tension member was chosen to represent the multiaxial states of stress. Sokolovsky’s compressible solution was compared with a closed solution based on the assumption of incompressibility. Experimental data were obtained from nylon and polyethylene members tested in a controlled environment room and 17-PH stainless steel members at 972°F. Good agreement was found between theory and experiment.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 174
  • 1967-0470
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/111885
Sponsor(s)/Grant Number(s)
Wright Air Development Division, Contract No. AF 33(616)-5658, Project No. 7351
Copyright and License Information
Copyright 1960 Board of Trustees of the University of Illinois

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Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
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.