Title: Reliability-based design optimisation of an aircraft wing structure with high-fidelity modelling

Authors: Melike Nikbay, Muhammet Nasif Kuru, Semra Bayat, Necati Fakkusoglu

Addresses: Department of Space Engineering, Faculty of Aeronautics and Astronautics, Istanbul Technical University, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey. ' Informatics Institute, Computational Science and Engineering, Istanbul Technical University, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey. ' Informatics Institute, Computational Science and Engineering, Istanbul Technical University, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey. ' Faculty of Aeronautics and Astronautics, Istanbul Technical University, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey

Abstract: We present reliability-based design optimisation of a simple aircraft wing based on performance measure approach. Catia is used as a parametric solid modeller while Abaqus is used to compute the structural response of the wing system. As an optimisation driver, Modefrontier, is used with sequential quadratic programming method. The core of the problem leans on the structural optimisation of a statically loaded wing. Weight and first modal frequency of that wing are optimised with stochastic parameters. The uncertainties concerning both yield strength and Young|s modulus of the aluminium material will be analysed by the reliability analysis code developed in Matlab.

Keywords: structural optimisation; reliability analysis; aircraft wings; reliability-based design optimisation; RBDO; design engineering; high-fidelity modelling; performance measures; parametric solid modelling; aluminium; uncertainty.

DOI: 10.1504/IJDE.2010.039759

International Journal of Design Engineering, 2010 Vol.3 No.3, pp.247 - 259

Available online: 18 Apr 2011 *

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