组合转子疲劳-蠕变联合损伤机理研究

摘要/Abstract

摘要： 以某重型燃气轮机组合转子为研究对象，建立了组合转子整体损伤模型；将纯疲劳和纯蠕变的损伤研究作为基础，根据损伤力学累积模型将联合作用下的损伤变量表示为两种损伤的非线性叠加，揭示了疲劳-蠕变联合作用下组合转子的损伤机理；对疲劳-蠕变联合条件下组合转子的损伤规律进行了实验验证。结果表明，建立的整体损伤模型是正确的、有效的，可为部件损伤预测组合转子的整体损伤提供参考。

关键词: 组合转子, 疲劳, 蠕变, 联合损伤

Abstract: A study of the combined rotor of a heavy gas turbine was conducted, and the whole damage model of the combined rotor was established. Based on the damage research of pure fatigue and pure creep, the damage variables under joint actions were expressed as the nonlinear superposition of two kinds of damages according to the damage mechanics accumulation model, therefore the damage mechanism of the combined rotor under the actions of fatigue-creep joints was revealed, and the damage rules of the combined rotor were verified experimentally.The results show that the whole damage model is correct and effective, and it may provide a reference for component damage prediction of the overall damages of the combined rotor.

Key words: combined rotor;fatigue;creep, joint damage

中图分类号:

王艾伦1，2;邓桂龙1，2;刘强1，2;李世杰1，2. 组合转子疲劳-蠕变联合损伤机理研究[J]. 中国机械工程.

WANG Ailun 1，2;DENG Guilong 1，2;LIU Qiang1，2;LI Shijie1，2. Research on Mechanism of Combined Rotor's Fatigue-Creep Joint Damages[J]. China Mechanical Engineering.

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