University of Illinois Urbana-Champaign

Effects of inelastic action on resistance to various types of loads; eccentrically loaded tension members made of two stainless steels of ductile members made from various classes of metals part 8 tested elevated temperatures

Sidebottom, O.M.; Clark, M.E.; Dharmarajan, S.

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https://hdl.handle.net/2142/111838

Description

Title
Effects of inelastic action on resistance to various types of loads; eccentrically loaded tension members made of two stainless steels of ductile members made from various classes of metals part 8 tested elevated temperatures
Author(s)
  • Sidebottom, O.M.
  • Clark, M.E.
  • Dharmarajan, S.
Issue Date
1958-04
Keyword(s)
  • Inelastic Action
  • Resistance
  • Loads
  • Ductile
  • Metals
Abstract
This report presents the results of an analytical and experimental investigation for the determination of the load necessary to produce a specified amount of inelastic deformation in rectangular-section members subjected to eccentric tensile loads at elevated temperatures. Two different theories were used. In one theory each isochronous stress-strain diagram was represented by two straight lines, and the load and deflection of the eccentrically loaded members were obtained from interaction curves and moment-load curves. In the other theory each isochronous stress-strain diagram was represented by a hyperbolic sine curve, and the resultant theory is called the hyperbolic sine theory. In the experimental investigation, tests were made on eccentrically-loaded rectangular-section members made of type 304 stainless steel at a test temperature of 1000°F and 17-7 PH stainless steel at test temperatures of 1000°F and 1200°F. Some of the 17-7PH stainless steel specimens were given a precipitation hardening treatment and some were tested in the untreated condition. The type 304 stainless steel did not creep at 1000°F. The interaction curve--moment-load curve theory was found to give satisfactory results. The heat treated 17-7PH stainless steel was found to have higher strength than the untreated, and it was found to exhibit a small amount of inelastic deformation for zero time but a larger amount of creep in 30 min. when tested at 1000°F and a much greater amount at 1200°F. In each case the isochronous stress-strain diagram could be represented by a hyperbolic sine curve. It was found that the load and/or deflection for the eccentrically loaded members could be adequately represented by either the hyperbolic sine theory or the interaction curve--moment-load theory. The former gave the best results.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 132
  • 1967-0428
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/111838
Sponsor(s)/Grant Number(s)
Wright Air Development Center, Air Research and Development Command, United States Air Force, Wright-Patterson Air Force Base, Ohio, Materials Laboratory, Contract No. AF 33(616)-2753, Project No. 7360
Copyright and License Information
Copyright 1958 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.