考虑表面加工状态的粉末盘低循环疲劳寿命分析  

Analysis of powder alloy disk's low cycle fatigue life with surface machining status

作　　者：冯引利 杨健 吴长波 FENG Yinli1 , YANG Jian2 , WU Changbo1(1. Siehuan Gas Turbine Establishment, Aero Engine （Group） Corporation of China, Chengdu 610500, China; 2. Xi＇an Aero-Engine Limited, Aero Engine （Group） Corporation of China, Xi＇an 710021, China)

机构地区：[1]中国航空发动机集团有限公司四川燃气涡轮研究院,成都610500 [2]中国航空发动机集团有限公司西安航空发动机有限公司,西安710021

出　　处：《航空动力学报》2018年第2期265-272,共8页Journal of Aerospace Power

基　　金：国家高技术研究发展计划(2015AA034401)

摘　　要：分析了表面加工状态对疲劳性能的影响,建立了基于Manson-Coffin公式考虑表面加工状态的低循环疲劳寿命分析方法。分析不考虑与考虑表面加工状态某FGH96粉末合金盘的低循环疲劳寿命,分析结果表明:表面加工状态对低循环疲劳寿命的影响程度为30%~40%。完成了某FGH96粉末合金盘的低循环疲劳寿命试验,试验结果表明:不考虑表面加工状态的预测寿命分散度大,考虑表面加工状态的预测寿命分散度小。The influence of surface machining status on fatigue characteristic was investigated.Based on Manson-Coffin formula,a low cycle fatigue life analysis method considering surface machining status was presented.The low cycle fatigue life of FGH96 Powder alloy disk was analyzed considering surface machining status or not.The results showed that the influence on fatigue life was 30-40 percent when considering surface machining status.The low cycle fatigue life test on FGH96 Powder alloy disk was finished.Test results indicate that the forecasting life dispersion is big without considering surface machining status,and the dispersion is small with consideration of surface machining status.

关 键 词：表面加工状态 粉末合金盘 低循环疲劳寿命 疲劳寿命试验 分散度 

分 类 号：V234.1[航空宇航科学与技术—航空宇航推进理论与工程]