航空发动机燃烧室蠕变屈曲研究

根据试验与计算分析,提出了确定构件蠕变屈曲临界时间的“曲率极大点”法。理论计算与试验结果的一致性表明该方法合理、有效、可行;通过对板、圆柱壳蠕变屈曲的试验与计算分析,为航空发动机燃烧室的蠕变屈面研究提供了模型简化的基础和方法上的准备;最后,对某型航空发动机燃烧室蠕变屈曲进行了计算分析。

Study on Aero-engine Combustor Creep Buckling

Curvature local maximum point" method to determine the critical time of creep buckling is presented from test and prediction analysis. Good agreement between test and calculation has revealed its rationalization, effectiveness and feasibility. Creep buckling analysis of plates and cylinder shells has been completed to provide basis and procedure of model simplification for aero engine combustor creep buckling. Finally, calculation and analysis on creep buckling of an aero engine combustor have been finished.