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{Shen:2016:10.1016/j.ijnonlinmec.2016.11.007,
author = {Shen, J and Wadee, MA and Sadowski, AJ},
doi = {10.1016/j.ijnonlinmec.2016.11.007},
journal = {International Journal of Non-Linear Mechanics},
pages = {43--58},
title = {Interactive buckling in long thin-walled rectangular hollow section struts},
url = {http://dx.doi.org/10.1016/j.ijnonlinmec.2016.11.007},
volume = {89},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - An analytical model describing the nonlinear interaction between global and local buckling modes in long thin-walled rectangular hollow section struts under pure compression founded on variational principles is presented. A system of nonlinear differential and integral equations subject to boundary conditions is formulated and solved using numerical continuation techniques. For the first time, the equilibrium behaviour of such struts with different cross-section joint rigidities is highlighted with characteristically unstable interactive buckling paths and a progressive change in the local buckling wavelength.  With increasing joint rigidity within the cross-section, the severity of the unstable post-buckling behaviour is shown to be mollified. The results from the analytical model are validated using a nonlinear finite element model developed within the commercial package Abaqus and show excellent comparisons. A simplified method to calculate the local buckling load of the more compressed web undergoing global buckling and the corresponding global mode amplitude at the secondary bifurcation is also developed. Parametric studies on the effect of varying the length and cross-section aspect ratio are also presented that demonstrate the effectiveness of the currently developed models.
AU  - Shen,J
AU  - Wadee,MA
AU  - Sadowski,AJ
DO  - 10.1016/j.ijnonlinmec.2016.11.007
EP  - 58
PY  - 2016///
SN  - 0020-7462
SP  - 43
TI  - Interactive buckling in long thin-walled rectangular hollow section struts
T2  - International Journal of Non-Linear Mechanics
UR  - http://dx.doi.org/10.1016/j.ijnonlinmec.2016.11.007
UR  - http://hdl.handle.net/10044/1/42718
VL  - 89
ER  -
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