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 language | English |
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Pages (from-to) | 1021-1033 |
Number of pages | 13 |
Journal | International Journal of Mechanical Sciences |
Volume | 35 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Jan 1993 |