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Optimisation analysis of reinforced cable distribution on the airship

Published online by Cambridge University Press:  07 October 2021

H. Zhao
Affiliation:
School of Aeronautics and Astronautics, Shanghai Jiaotong University, Shanghai, China
Z. Chen*
Affiliation:
School of Aeronautics and Astronautics, Shanghai Jiaotong University, Shanghai, China
J. Chen
Affiliation:
School of Aeronautics and Astronautics, Shanghai Jiaotong University, Shanghai, China

Abstract

Reinforced cables are usually installed on flexible airship structures to enhance their load-bearing capability. However, reinforced cables also increase the total weight of the airship. In order to find a balance between large loading-bear capability and light weight, a multi-objective optimisation scheme based on the genetic algorithm NSGA-II is put forward for the reinforced cable distribution on the airship. Firstly, different cable distribution schemes are presented according to engineering experience and the optimal one is determined by load analysis. Then, the CAE method and optimisation analysis are combined to achieve structure design optimisation. The parametric model of the airship structure with reinforced cables is established by ABAQUS secondary development and the load analysis is carried out. Parameter passing and optimisation algorithm are operated by Isight software and the optimisation analysis is conducted based on the NSGA-II algorithm. Finally, we draw some conclusions of the rules of optimised reinforcing cable distribution. The work of this paper has crucial engineering significance for improving performance of the airship structure design.

Type
Research Article
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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