材料性能分散性对轮盘破裂转速预测结果的影响研究  

Effect of material property dispersion on disc burst speed prediction results

作　　者：苏俊卿 李林骏 SU Jun-qing;LI Lin-jun(AECC Sichuan Gas Turbine Establishment,Mianyang 621000,China)

机构地区：[1]中国航发四川燃气涡轮研究院,四川绵阳621000

出　　处：《燃气涡轮试验与研究》2021年第3期22-24,62,共4页Gas Turbine Experiment and Research

摘　　要：为优化航空发动机轮盘结构设计,节约轮盘破裂转速预测成本,借助GH4169轮盘材料拉伸性能数据,采用基于塑性失稳准则和大变形有限元分析的轮盘破裂转速预测方法,分别利用双线性、多线性及非线性材料本构模型,分析探讨了材料性能分散性对轮盘破裂转速预测的影响。结果表明,在典型分散范围内考虑材料性能分散性对轮盘破裂转速预测结果有一定影响,但影响较小;在预测轮盘破裂转速时,可直接采用最差材料性能曲线,以获得相对保守偏于安全的结果。To optimize the structural design of aero-engine disc and reduce the cost of disc burst speed pre⁃diction,based on tensile test data of GH4169 alloys,by means of plastic instability criterion and large defor⁃mation finite element analysis methods and bilinear,multi-linear,and non-linear constitutive models,effect of material property dispersion on disc burst speed prediction results was analyzed.Result shows that in typ⁃ical range,material property dispersion has little effect on disc burst speed prediction results.Worst materi⁃al property curve can be directly employed to predict disc burst speed to obtain conservative but safe results.

关 键 词：航空发动机 轮盘 破裂转速 材料性能分散性 本构模型 GH4169合金材料 

分 类 号：V232.3[航空宇航科学与技术—航空宇航推进理论与工程]