Analysis and tailoring design of stiffness-center of a high-ratio-aspect composite wing

作者：Dong Y^*; Huo S; Hua L; Wang F; Yue Z

来源：China Mechanical Engineering, 2013, 24(1): 52-55.

DOI：10.3969/j.issn.1004-132X.2013.01.011

• Finite element(FE) method
• Multi-island genetic algorithm
• Optimization design
• Sequential quadratic programming
• Stiffness center axis

A simple method was presented by means of FE software to fix on the location of stiffness-center axis of a high-ratio-aspect composite wing model. The most difference was 7.5, comparing the results of FE method with that of theoretical method. It was applied to an example of engineering. The optimal design was carried out with the location of stiffness-center axis of a composite wing as objective function and static strength and stability as constraints. The design variables were the lay-up thickness of panel and spar web, and the cross-section area of stringer and spar edge. Through the iterative calculation by multi-island genetic algorithm and sequential quadratic programming, the optimized location of stiffness-center axis of composite wing model was obtained finally. Compared with that optimized before, the location of stiffness-center axis is closer to leading edge of the wing.

• 出版日期2013
• 单位西北工业大学