车用增压器涡轮叶片叶根疲劳可靠性研究
2014-08-15 10:54:22
作者：本站整理来源：
王正1 王增全1 邢卫东1 蒋婧2 何洪1 门日秀1
（1. 中国北方发动机研究所 柴油机增压技术重点实验室 天津 300400；
2. 中国人民解放军96627部队 北京）
（1. 中国北方发动机研究所 柴油机增压技术重点实验室 天津 300400；
2. 中国人民解放军96627部队 北京）
摘 要：以某型车用增压器涡轮为例，研究了涡轮叶片叶根疲劳可靠性评价方法与疲劳寿命概率分布特征。基于发动机耐久性考核试验剖面，分析了增压器涡轮叶片叶根部位的应力历程。针对涡轮叶片叶根疲劳失效模式，建立了以发动机耐久性试验剖面循环次数为寿命度量指标的涡轮可靠性评价模型，研究了涡轮叶片叶根疲劳可靠度与失效率变化规律以及疲劳寿命概率分布特征，给出了满足不同可靠度要求的涡轮叶片叶根疲劳寿命。
关键词：车用增压器；涡轮叶片；疲劳可靠性；概率特征；可靠寿命
关键词：车用增压器；涡轮叶片；疲劳可靠性；概率特征；可靠寿命
Study on the Fatigue Reliability of Blade Root of Turbine of Turbocharger for Vehicle Application
WANG Zheng1 WANG Zengquan1 XING Weidong1 JIANG Jing2 HE Hong1 MEN Rixiu1
(1. National Key Laboratory of Diesel Engine Turbocharging Technology, China North Engine Research Institute, Tianjin 300400；
2. 96627 troops, People's Liberation Army, China, Beijing)
WANG Zheng1 WANG Zengquan1 XING Weidong1 JIANG Jing2 HE Hong1 MEN Rixiu1
(1. National Key Laboratory of Diesel Engine Turbocharging Technology, China North Engine Research Institute, Tianjin 300400；
2. 96627 troops, People's Liberation Army, China, Beijing)
Abstract: Taking a turbine of turbocharger for vehicle application as an example, the method for evaluating the fatigue reliability and the fatigue life probabilistic characteristics of blade root of turbine is studied. Based on the endurance test profile of vehicle engine, the fatigue stress spectrum of turbine blade root is analyzed. Then, with the cycles of the endurance test profile of vehicle engine as life parameter, the reliability model of turbine with blade root fatigue failure mode is developed, the rules that the reliability and failure rate of turbine with the failure mode of blade root fatigue change are studied, and the reliable life of turbine with blade root fatigue failure mode is calculated.
Key words: turbocharger for vehicle application; turbine; blade; fatigue reliability; life
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王正：wzneu@126.com
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