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:2019:10.1016/j.tws.2019.106183,
author = {Shen, J and Wadee, MA},
doi = {10.1016/j.tws.2019.106183},
journal = {Thin-Walled Structures},
title = {Local-global mode interaction in thin-walled inelastic rectangular hollow section struts part 1: nonlinear finite element analysis},
url = {http://dx.doi.org/10.1016/j.tws.2019.106183},
volume = {145},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Mass efficient thin-walled rectangular hollow section (RHS) struts have been shown to be susceptible to local–global mode interaction and exhibit sensitivity to imperfections. Material nonlinearity may increase the imperfection sensitivity of such members further and affect the final failure mode. Nonlinear finite element (FE) models for welded inelastic thin-walled RHS struts with pre-defined local and global geometric imperfections alongside residual stresses are developed within the commercial package Abaqus and validated against two independent experimental studies. Based on the validated FE model, the effects of material nonlinearity and residual stresses from welding on the ultimate load, mechanical behaviour and the imperfection sensitivity of struts are investigated. A simplified method to determine the initial geometric imperfection amplitude introduced in the FE model with residual stresses explicitly modelled within the ECCS framework is proposed for the first time. The experimental and numerical results in conjunction with existing experimental results from the literature are employed in the companion paper for the assessment of the Effective Width Method and Direct Strength Method, which also forms the basis for a new set of design recommendations.
AU  - Shen,J
AU  - Wadee,MA
DO  - 10.1016/j.tws.2019.106183
PY  - 2019///
SN  - 0263-8231
TI  - Local-global mode interaction in thin-walled inelastic rectangular hollow section struts part 1: nonlinear finite element analysis
T2  - Thin-Walled Structures
UR  - http://dx.doi.org/10.1016/j.tws.2019.106183
UR  - http://hdl.handle.net/10044/1/70481
VL  - 145
ER  -
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