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用有限组合元法分析外包T型叶根小脚装配间隙的影响
引用本文:陆龙云,宗百申. 用有限组合元法分析外包T型叶根小脚装配间隙的影响[J]. 上海理工大学学报(社会科学版), 1991, 0(1)
作者姓名:陆龙云  宗百申
作者单位:上海机械学院动力工程学院(陆龙云),上海机械学院动力工程学院(宗百申)
摘    要:本文通过有限组合元法分析了外包小脚装配间隙对叶根轮缘强度的影响。得出了在工艺许可条件下,小脚装配间隙宜尽量减小的结论。

关 键 词:叶轮机械  叶根  装配间隙  有限组合无法

THE MATCH GAP EFFECT OF THE ENVELOPED T SHAPE TANG OF THE STEAM TURBINE BLADE
Lu Longyun Zong Baishen. THE MATCH GAP EFFECT OF THE ENVELOPED T SHAPE TANG OF THE STEAM TURBINE BLADE[J]. Journal of University of Shanghai For Science and Technilogy(Social Science), 1991, 0(1)
Authors:Lu Longyun Zong Baishen
Affiliation:Lu Longyun Zong Baishen
Abstract:By means of the combinatorial finite elements, the effect of the assembling gap between the contacting faces of the leg of the blade tang and the rim on the strength is analysed. The calculating result indicates that the concentrated stress of the envelope leg is low even if the gap is small. The strength of the leg, therefore, is not a vexing problem.For the short and medium length of the blade the outside displacement of the legs of the rim is so small that it is not possible for the faces of the legs to contact, if there is a wide assembling gap. If there is a small gap retained during the operation of the turbine, the collision between the legs will come into being even if the vibration of the blade is not so serious. It is concluded that the untouchable faces of the legs are not benifical to the damping of the tengential vibration of the blade.
Keywords:Turbomachinery  Tang  Match gap  Combinatorial finite elements method  
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