Hardening-softening behaviour of tubular cantilever beams

T. X. Yu*, S. R. Reid, B. Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In the large plastic deformation of a tubular cantilever beam loaded by a force at its tip, the strain hardening of the material tends to increase the load-carrying capacity, while local buckling and cross-sectional ovalization (flattening) occurring in the neighbourhood of the root tends to reduce the moment-carrying capacity and results in structural softening. Experiments were carried out for seamless mild steel tubular cantilevers of radius thickness ratio ranging from 9 to 20 to explore the development of local buckling and flattening and to examine its influence on the global load-carrying capacity of the beam. A simple theoretical model is proposed to predict the global hardening-softening behaviour of tubular cantilever beams in terms of the material properties and geometric parameters of the tube.

Original languageEnglish
Pages (from-to)1021-1033
Number of pages13
JournalInternational Journal of Mechanical Sciences
Volume35
Issue number12
DOIs
Publication statusPublished - 1 Jan 1993

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