University of Illinois Urbana-Champaign

Effects of inelastic action on resistance to various types of loads; eccentrically loaded columns having angle and T sections of ductile members made from various classes of metals part 4

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

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https://hdl.handle.net/2142/111817

Description

Title
Effects of inelastic action on resistance to various types of loads; eccentrically loaded columns having angle and T sections of ductile members made from various classes of metals part 4
Author(s)
  • Clark, M.E.
  • Sidebottom, O.M.
Issue Date
1956-11
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 columns subjected to eccentric loads. This load is found analytically from the intersection of a constant depth of yielding interaction curve and the moment-load curve (see Part 1 of this Report). The collapse load of the column can be taken as the maximum load given by the moment-load curve. In the experimental investigation, tests were made on eccentrically-loaded angle- and T-section columns made from type 304 stainless steel. The angle-section columns were so oriented that some buckled about the minimum axis of inertia and some about the maximum axis of inertia. The effects of variations in initial eccentricity and slenderness ratio on the collapse load were investigated. In all cases the experimental and theoretical moment-load curves were of the same general shape; the experimental collapse load being less than the theoretical by 2 to 16 percent. Since the theory is based on assumptions which make it conservative, the fact that the experiments showed it to be unconservative was attributed to the time-sensitive behavior of the stainless steel material. The stress-strain properties obtained from tension and compression tests did not represent the stress-strain behavior of the material in the column. When these stress-strain properties were adjusted by a 28 percent reduction in the modulus of elasticity, the experimental collapse load varied from 9 percent greater to 11 percent less than the theoretical value with most of the values comparing very favorably.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 112
  • 1967-0409
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/111817
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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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.