摘要
为了实现在离心载荷和温度梯度影响下燃气轮机涡轮盘的寿命预估,首先建立了该燃气轮机涡轮盘的有限元模型,并对其进行热弹塑性应力计算,进而找出该涡轮盘疲劳断裂的危险部位,并利用S-N曲线法对该部位进行疲劳寿命计算。该研究可以为燃气轮机后续的使用和维修提供参考依据,同时也对同类型涡轮盘的寿命预估起到借鉴作用。
In order to estimate the life expectancy of gas turbine disks under the influence of centrifugal loads and temperature gradients, the finite element model of the gas turbine disk was established and calculated firstly. Then find out the dangerous part of the turbine disk fatigue fracture, and use S-N curves to calculate the fatigue life of the site. The study can provide references for the subsequent use and maintenance of gas turbine, and it can also serve as a reference for the life prediction of the same type of turbine disks.
作者
黄金娥
HUANG Jin-e(Institute of Surface Combat System,Naval Research Acdemy,Beijing 100161,China)
出处
《舰船科学技术》
北大核心
2018年第7期85-88,共4页
Ship Science and Technology
关键词
有限元模型
热弹塑性应力计算
S-N曲线
寿命预估
finite element model
thermal elastoplastic stress calculation
S-N curves
life prediction
