| 混流式水轮机不锈钢转轮叶片应力有限元分析 |
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| 引用本文： | 谢阿萌,龙毅.混流式水轮机不锈钢转轮叶片应力有限元分析[J].湖南电力,2011,31(4):14-16. |
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| 作者姓名： | 谢阿萌 龙毅 |
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| 作者单位： | 湖南省电力公司科学研究院,湖南长沙,410007 |
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| 摘 要： | 针对混流式水轮机组不锈钢转轮叶片反复开裂的严重问题,通过ANSYS有限元模拟分析转轮叶片制造过程中产生的焊接残余应力和额定工况运行时叶片的应力分布.仿真计算结果表明,出水边焊缝附近是应力的峰值区域,残余应力和工作应力的综合作用是导致叶片产生疲劳裂纹的根本原因,计算结果为设计、制造阶段焊接残余应力和运行阶段转轮应力测试提...
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| 关 键 词： | 混流式水轮机 叶片裂纹 焊接残余应力 工作应力 |
Finite element analysis of stainless steel runner blade in francis turbine |
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| XIE A-meng,LONG Yi.Finite element analysis of stainless steel runner blade in francis turbine[J].Hunan Electric Power,2011,31(4):14-16. |
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| Authors: | XIE A-meng LONG Yi |
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| Affiliation: | XIE A-meng LONG Yi(Hunan Electric Power Corporation Research Institute,Changsha 410007,China) |
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| Abstract: | The repeated cracking of stainless steel runner blade was a serious problem in francis turbine.The general finite element method code ANSYS was employed to simulate and analyse welding residual stress in runner blade manufacturing processes and stress distribution in nominal operating conditions.Simulation results showed that weld area near the water's edge was in the peak stress region.The combined effect of residual stress and work stress was the root causes of fatigue cracks.The calculation results provi... |
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| Keywords: | francis turbine blade cracks welding residual stress work stress |
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