航空发动机GH4133轮盘材料失效分布参数规律研究  

Study on Distribution Parameters of Material Fatigue Failure of Aircraft Engine GH4133 Turbine Disc

作　　者：万宏强[1] 高刚[1] 丁锋[1] 

机构地区：[1]西安工业大学机电工程学院,西安710021

出　　处：《西安工业大学学报》2017年第4期274-280,共7页Journal of Xi’an Technological University

基　　金：国家自然科学基金(51275374)

摘　　要：为研究航空发动机GH4133轮盘材料失效分布参数规律,利用最大似然估计法估计出轮盘材料在不同温度、应变和应变比下的对数正态分布的参数估计值,通过图表法与方差分析法对应变、温度及应变比这三个影响疲劳失效的因素与对数正态分布参数均值与方差间的关系进行了计算.结果表明:GH4133轮盘材料失效分布均值仅受应变的影响,标准差仅受温度的影响,疲劳失效与最大应变值有关,而与应变比无关,给出了相关影响函数关系.In order to research on failure distribution parameter of aircraft engine GH4133 turbine disc material, the estimated value of material of logarithmic normal distribution of parameter was obtained using the method of maximum likelihood estimate under the different temperature, strain and strain ratio. The relationship of the mean and variance with the temperature, strain and strain ratio is studied through the graph method and variance analysis method. Results show： Average of failure distribution of GH4133 disc materials is only affected by strain,and standard deviation is only affected by temperature; Fatigue failure is associated with maximum strain value and has nothing to do with the strain ratio;The related influence function is presented.

关 键 词：航空发动机 轮盘材料 失效分布 疲劳失效 

分 类 号：V231.9[航空宇航科学与技术—航空宇航推进理论与工程]