随机环境下涡轮盘-片剩余寿命预测方法  

Research on residual life prediction of turbine blade-disc under radon environment

作　　者：杨自春[1] 申文才[1] 彭茂林[1] 

机构地区：[1]海军工程大学船舶与动力学院,武汉430033

出　　处：《航空动力学报》2009年第8期1677-1683,共7页Journal of Aerospace Power

基　　金：总装武器装备预研基金

摘　　要：采用随机有限元方法,针对某燃气涡轮盘-片进行了热流固耦合及接触热弹塑性分析,得到了随机应力应变响应;基于概率Miner损伤准则和应变场强法,运用K.N.Smith疲劳损伤公式及Manson-Succop形式热强综合参数蠕变方程计算了涡轮盘-片的疲劳蠕变寿命;据此分析了影响疲劳和蠕变损伤的各种因素,提出了装置使用和维护方面的建议.分析结果接近实际,证明该方法不失为目前为止较好的预测涡轮盘-片剩余寿命的新方法.Heat-fluid-solid coupling and contact thermo-elastic-plastic analysis was carried for a certain turbine blade-disc,and the stress and strain-time course was obtained in this paper.Based on probabilistic Miner's rule and strain field intensity(SFI)approach,the fatigue/creep life of turbine blade-disc was calculated by using K.N.Smith equation and Manson-Succop creep equation.Influential factors to the fatigue and creep were analyzed according to the life prediction results and some advices about utilization ...

关 键 词：随机有限元 热流固耦合 接触问题 涡轮盘-片 剩余寿命预测 

分 类 号：TK471[动力工程及工程热物理—动力机械及工程]