摘要
为了对燃气轮机透平轮盘的概率疲劳寿命和可靠性分析展开充分研究,针对透平轮盘材料13Cr10MoW1VNbN开展了低周疲劳试验并进行结果分析及误差优化,基于Manson-Coffin公式及材料试验数据,建立了应变-寿命预测模型。分别采用蒙特卡洛法与包络线法,获得轮盘疲劳寿命数据样本,开展了统计分析及可靠性研究。结果表明:基于蒙特卡洛法得到的可靠度曲线比基于包络线法得到的可靠度曲线下降趋势更平缓,考虑的不确定因素更多,安全裕度更大。
To comprehensively study the probabilistic fatigue life and reliability analysis of turbine wheel,low-cycle fatigue test of turbine wheel material 13Cr10MoW1VNbN was carried out.The corresponding result analysis and error optimization were performed.Based on Manson-Coffin formula and material test data,a strain-life prediction model was established.Monte Carlo method and envelope method were used to obtain the fatigue life data of wheel,respectively.The statistical analysis and reliability research were conducted.Results show that the reliability curve by Monte Carlo method has a gentler downward trend than that by envelope method.More uncertainties considered give rise to greater safety margin.
作者
李孝品
杨宇
田根起
李思琦
王家鋆
LI Xiaopin;YANG Yu;TIAN Genqi;LI Siqi;WANG Jiayun(Shanghai Power Equipment Research Institute Go.,Ltd.,Shanghai 200240,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2023年第11期1434-1439,1530,共7页
Journal of Chinese Society of Power Engineering
基金
国家科技重大专项资助项目(J2019IV-0022-0090)。
关键词
透平轮盘
概率疲劳寿命
可靠性分析
蒙特卡洛法
包络线法
turbine wheel
probabilistic fatigue life
reliability analysis
Monte Carlo method
envelope method
