涡轮盘-片结构瞬态应力应变分析及寿命预测  

The Transient Stress-strain Analysis and Fatigue Life Prediction of the Gas Turbine Blade-disc Structure

作　　者：彭茂林[1] 杨自春[1] 曹跃云[1] 

机构地区：[1]海军工程大学船舶与动力学院,武汉430033

出　　处：《汽轮机技术》2011年第1期20-23,共4页Turbine Technology

基　　金：总装武器装备预研基金(9140A27050109JB1112);总装十一五预研项目(513270301)

摘　　要：根据某燃气轮机实际运行数据编制了疲劳载荷谱,利用ANSYS软件建立了涡轮盘-片结构接触热弹塑性分析有限元模型,分别计算了在紧急工况、典型工况、改进工况下结构的应力应变变化情况,采用Morrow弹性应力修正的M anson-Coffin方程计算了结构的疲劳寿命。综合考虑机动性和使用寿命的要求,制定了一个改进的启动-运行-停机程序。研究方法及结论对燃气、蒸汽及内燃动力装置的运行管理具有一定的参考价值。According to the actual running dates of a certain gas turbine, the load spectrums were set and the contact- thermal-elastic-plastic finite element model was created. The changes of stress-strain of the blade-disc structure were calculated respectively in the urgent loads, typical loads and improved loads. And the emendatory Manson-Coffin equation of Morrow was adopted in the fatigue life compute. Taking into account of both the maneuverability and fatigue life, a improved start-run-stop process was constituted. The methods and results may serve as a reference for the management and running process of the gas-turbine, steam-power and diesel engine installations.

关 键 词：涡轮盘-片 热弹塑性分析 应力应变 寿命预测 

分 类 号：TK474.7[动力工程及工程热物理—动力机械及工程]