Large-Deflection Analysis of Whipping Pipes. II: Rigid, Perfectly-Plastic Beam Model with Elastic Root Spring

Autor:	S. R. Reid, B. Wang
Rok vydání:	1995
Předmět:	Cantilever Materials science Quantitative Biology::Neurons and Cognition business.industry Mechanical Engineering Elastic energy Structural engineering Plasticity Mechanics of Materials Deflection (engineering) Plastic bending Plastic hinge Deformation (engineering) Elasticity (economics) business
Zdroj:	Journal of Engineering Mechanics. 121:888-895
ISSN:	1943-7889 0733-9399
DOI:	10.1061/(asce)0733-9399(1995)121:8(888)
Popis:	In a companion paper, the effects of large deflections were evaluated for plastic deformation of a cantilever beam under a transverse force pulse applied at its tip. Here, the effect of material elasticity is introduced in addition to the large deflections through a simple model. The beam is assumed to be rigid and perfectly-plastic, but instead of the usual fully clamped constraint at its root, an elastic, perfectly-plastic rotational spring is incorporated there so that the beam-spring system has a certain capacity to store elastic energy. Compared with the rigid, perfectly-plastic model, the present beam-spring model shows differences in the initial plastic hinge position and in the minimum magnitude of the force needed to produce plastic collapse. It is also shown that a range of different responses may occur as the remaining plastic hinge travels along the beam segment toward the root, rather than the unique response mode in the rigid, perfectly-plastic analysis.
Databáze:	OpenAIRE
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