飞机整流罩蒙皮局部屈曲优化设计研究

针对飞机整流罩结构首先进行初步设计。采用铝合金薄蒙皮的形式,应用MSC.Nastran分析模块进行静力和线性初始屈曲计算,给出整流罩结构的特征值和局部失稳模态。研究了尾翼主结构变形对整流罩蒙皮稳局部屈曲的影响作用。最终整流罩蒙皮采用蜂窝夹层结构,解决了整流罩局部失稳的问题;同时制定出蜂窝夹层厚度的优化设计方案。通过数值优化计算,给出了整流罩蒙皮稳定性约束条件下的优化设计结果。

Research on the stability of the aircraft fairing optimization

The fairing structure is using aluminum alloy sheet structure as the preliminary design program.The MSC.Nastran analysis module is applied for the static and initial linear buckling calculation.The results,from which have learned that the deformation of the main tail structure would have a great impact on the local buckling modal of the fairing,show the eigenvalue values and the local buckling modal of the fairing structure.To sovle the problem above,the honeycomb sandwich is used for the fairing while the ...