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Design and parameter optimization on cylindrical comb-shaped joint of wing

WU Congyu;YAO Weixing;Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle;Nanjing University of Aeronautics and Astronautics;State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics;  
To solve the practical engineering problems for the normal wing comb-shaped joint of aircraft,such as serious stress and high structure weight,a cylindrical comb-shaped joint used for wing structure connection is proposed,and an optimization method on its detailed parameters is proposed by the technologies of test design and Kriging approximate model. The sample points are selected by test design method and the responses of the samples are obtained by nonlinear finite element contact analysis. The samples include the weight and the stress. The Kriging approximate model is built by these samples and the precision of the Kriging approximate model is improved by update technology. Furthermore,the Kriging approximate model is optimized by multi-island genetic algorithm and the optimal solution is obtained. The example shows that the method can reduce wing weight and improve the optimization efficiency.
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