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

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.