Imperial College London
Alternate

Professor M Ahmer Wadee

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Nonlinear Mechanics
 
 
 
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Contact

 

+44 (0)20 7594 6050a.wadee Website

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

421Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Fajuyitan:2017:10.1002/cepa.121,
author = {Fajuyitan, OK and Sadowski, AJ and Wadee, MA},
doi = {10.1002/cepa.121},
journal = {ce/papers},
pages = {811--820},
title = {04.01: Buckling of very short elastic cylinders with weld imperfections under uniform bending},
url = {http://dx.doi.org/10.1002/cepa.121},
volume = {1},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - <jats:title>ABSTRACT</jats:title><jats:p>The lengthdependent domains of behaviour of thin elastic cylindrical shells under uniform bending have recently received significant research attention. Ovalisation is known to affect very long cylinders which undergo significant crosssectional flattening before failing by local buckling. This effect is restrained by the end boundary condition in shorter cylinders, which fail instead by local buckling at moments close to the classical analytical prediction. In very short cylinders, however, even this local buckling is restrained by the end boundary, and failure occurs instead through the development of a destabilising meridional fold on the compressed side. Although this is a limit point instability under bending, ovalisation does not play any role at all. This ‘very short’ length domain has only recently been explored for the first time with the aid of finite element modelling.</jats:p><jats:p>A brief overview of the nonlinear buckling behaviour of very short elastic cylinders under uniform bending is presented in this paper. Two types of edge rotational restraint are used to illustrate the influence of a varying support condition on the stability in this short length range. It is shown that short cylinders under bending do not suffer at all from local shortwave buckling. Additionally, when the meridional dimension of such cylinders becomes particularly short the resulting numerical models may predict indefinite stiffening without a limit point, even when the shell is modelled using more complete 3D solid continuum finite elements. Idealised weld depressions, which are realistic representations of a systemic manufacturing defect, are used to demonstrate only a very mild sensitivity to geometric imperfections at such short lengths owing to a prebuckling stress state dominated by local compatibility bending. The topic should be of interest to researchers studying shell problems dom
AU  - Fajuyitan,OK
AU  - Sadowski,AJ
AU  - Wadee,MA
DO  - 10.1002/cepa.121
EP  - 820
PY  - 2017///
SN  - 2509-7075
SP  - 811
TI  - 04.01: Buckling of very short elastic cylinders with weld imperfections under uniform bending
T2  - ce/papers
UR  - http://dx.doi.org/10.1002/cepa.121
VL  - 1
ER  -
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