Imperial College London
Portrait Picture

M H Ferri Aliabadi

Faculty of Engineering, Department of Aeronautics

Chair in Aerostructures
 
 
 
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Contact

 

+44 (0)20 7594 5077m.h.aliabadi

 
 
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Assistant

 

Miss Lisa Kelly +44 (0)20 7594 5056

 
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Location

 

CAGB323City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Morse:2019:10.1016/j.enganabound.2019.03.036,
author = {Morse, L and Sharif, Khodaei Z and Aliabadi, M},
doi = {10.1016/j.enganabound.2019.03.036},
journal = {Engineering Analysis with Boundary Elements},
pages = {183--196},
title = {A multi-fidelity boundary element method for structural reliability analysis with higher-order sensitivities},
url = {http://dx.doi.org/10.1016/j.enganabound.2019.03.036},
volume = {104},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A novel multi-fidelity modelling methodology for structural reliability analysis using the Boundary Element Method (BEM) with an Implicit Differentiation Method (IDM) is presented. The higher-order sensitivities of the elastostatic BEM equations with respect to changes in several geometric variables have been derived for the first time for use with theIDM for conducting reliability analyses with the Second-Order Reliability Method (SORM), a more accurate alternative to FORM for problems with non-linear limit state functions. Multi-fidelity formulations involving the IDM have also been derived for the first time, making use of the metamodeling technique Kriging. The use of multi-fidelity modellingenables the creation of a model that has similar accuracy to a high-fidelity model, but with a computational cost similar to that of a low-fidelity model. The IDM is validated through a numerical example for which the analytical solution is known. A further two examples featuring an I-beam section and a triangular support bracket with a large number of variables are also investigated. Overall, it has been shown that the proposed IDM/multi-fidelity modelling methodology significantly improved the efficiency and accuracy of the reliability analyses when applied to complex problems involving a large number of random variables under high levels of uncertainty.
AU  - Morse,L
AU  - Sharif,Khodaei Z
AU  - Aliabadi,M
DO  - 10.1016/j.enganabound.2019.03.036
EP  - 196
PY  - 2019///
SN  - 0955-7997
SP  - 183
TI  - A multi-fidelity boundary element method for structural reliability analysis with higher-order sensitivities
T2  - Engineering Analysis with Boundary Elements
UR  - http://dx.doi.org/10.1016/j.enganabound.2019.03.036
UR  - http://hdl.handle.net/10044/1/68239
VL  - 104
ER  -
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