University of Illinois Urbana-Champaign

Effects of inelastic action on resistance to various types of loads; eccentrically loaded tension members having angle and T sections of ductile members made from various classes of metals part 1

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

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https://hdl.handle.net/2142/112703

Description

Title
Effects of inelastic action on resistance to various types of loads; eccentrically loaded tension members having angle and T sections of ductile members made from various classes of metals part 1
Author(s)
  • Sidebottom, O.M.
  • Clark, M.E.
Issue Date
1956-03
Keyword(s)
  • Inelastic Action
  • Resistance
  • Loads
  • Ductile
  • Metals
Abstract
This paper presents the results of an analytical and experimental investigation for the determination of the load necessary to produce any given depth of yielding in angle- and T-section members subjected to eccentric tensile loading. This load is found analytically from the intersection of a constant depth of yielding interaction curve and a moment-load curve. General load and moment expressions used in the construction of the interaction curves were derived for cross-sections composed of rectangular elements. The primary assumption in these derivations was that for small inelastic strains the stress-strain diagrams of the material could be represented by two straight lines. The moment-load expressions were derived on the assumption that each eccentrically loaded member deformed into a segment of a circle. In the experimental investigation eccentric load tests were made on angle- and T-section members made from various classes of materials. The three materials used were S.A.E. 4340 alloy steel, type 304 stainless steel, and 7075-T6 aluminum alloy. The angle-section members were tested with the principal axes orientated in three different positions with respect to the loading plane. In general the results of these tests corroborated the theoretical analyses. It was found that deviations from the theory could be explained by variations in the stress-strain properties of the material. Supplementary tests were performed to determine the effect of pure bending loading and the effect of time on the inelastic behavior under sustained and alternating load schedules. Pure bending test results indicated that the theory proposed was conservative in the majority of cases. The results of the sustained and alternating load tests indicated that time was not an important variable so long as the material properties used in the analysis were obtained from specimens subjected to loading schedules similar to those used in testing the eccentrically loaded member.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 100
  • 1967-0396
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112703
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 1956 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.