中国电机工程学报2013，Vol.33Issue(11)：104-111,前插15,9.
涡轮叶片低周疲劳可靠性稳健设计优化研究
Research on Low Cycle Fatigue Reliability-based Robust Design Optimization of Turbine Blade
摘要
Abstract
To solve the problem of low cycle fatigue reliability-based robust design optimization of turbine blade, a series of fatigue tests of the blade material under high temperature were completed. According to the tests data, the randomized approach of deterministic equation was introduced to obtain the probabilistic strain-life curves of the blade material. The Bezier curve was employed to establish the blade model line and the parameter models of the turbine blade and flow field. After, the thermal-aero-structure coupling finite element method was used to obtain the aerodynamic efficiency, stress and strain distribution of the blade. Then, the fatigue reliability-based robust design optimization model was established and the response surface method was used to simulate the output performance functions and the limit state functions of the blade. Finally, the design optimization result was calculated with the sequential quadratic programming method by taking the fatigue reliability as the basic constrain condition. The results prove that: the low cycle fatigue reliability and robustness of the blade are improved remarkably after design optimization; the model and the methods are correct and can be served as references for the low cycle fatigue reliability-based robust design optimization of turbine blade and other complex structures.关键词
涡轮叶片/疲劳/优化设计/可靠性/稳健设计Key words
turbine blade/design optimization/fatigue/reliability/robust design分类
能源科技引用本文复制引用
彭茂林,杨自春,曹跃云,初珠立..涡轮叶片低周疲劳可靠性稳健设计优化研究[J].中国电机工程学报,2013,33(11):104-111,前插15,9.基金项目
总装预研基金项目(513270301) （513270301）
武器装备预研基金项目(9140A27050109JB1112) （9140A27050109JB1112）
海军工程大学博士研究生创新基金. （）
