Thin-wall reinforced structure buckling fatigue analysis method

The invention belongs to the technical field of aviation structure design, and discloses a thin-wall reinforced structure buckling fatigue analysis method, which is based on thin-wall reinforced structure buckling fatigue test result analysis, develops correlation research of different reference stresses and service life, introduces a buckling fatigue influence coefficient, gives semi-empirical and semi-theoretical engineering buckling fatigue calculation formula based on a DFR method, and can be used for quickly determining the buckling fatigue life of the thin-walled reinforced structure and performing large-scale engineering calculation in engineering, and therefore, the labor force of personnel is liberated. 本发明属于航空结构设计技术领域，公开了一种薄壁加筋结构屈曲疲劳分析方法，基于薄壁加筋结构屈曲疲劳试验结果分析，开展不同参考应力与寿命的相关性研究，引入了屈曲疲劳影响系数，给出了基于DFR法的半经验、半理论的工程屈曲疲劳计算公式，可用于工程中快速确定薄壁加筋结构屈曲疲劳寿命以及大规模工程计算，解放了人员劳动力。