基于最大临界损伤平面的转子寿命预测方法  

Life Prediction Method of Steam Turbine Rotor Based on Maximum Damage Critical Plane

作　　者：王羽[1] 杨自春[1] 

机构地区：[1]海军工程大学动力工程学院,武汉430033

出　　处：《汽轮机技术》2014年第3期217-220,共4页Turbine Technology

摘　　要：基于损伤力学的临界平面理论,将结构的最大损伤平面作为临界面,针对汽轮机转子建立了一种新的多轴疲劳寿命预测模型。该模型综合了Fatemi-Socie模型和SWT模型的优势,能够更好地反映非比例加载时所产生的附加强化现象。运用该模型对某型船用汽轮机高压转子进行了多轴损伤寿命预测,计算结果表明,该模型和算法具有较高的计算精度,并具有良好的工程适用性。Based on the critical plane method,a multiaxial fatigue life prediction method was proposed. This model took the maximum damage plane as the critical plane,integrating the respective advantages of Fatimi-Socie model and SWT model,which reflected the additional cyclic hardening with the non-proportional loading better. The life prediction of steam turbine rotor using this method gave more saticfactory and accurate results,proving this model would go well with the engineering application.

关 键 词：多轴疲劳 临界平面 汽轮机转子 寿命预测 

分 类 号：TK263.6[动力工程及工程热物理—动力机械及工程]