【摘要】 叶片断裂和裂纹是旋转机械中普遍存在的一种安全隐患。本文应用大型有限元ANSYS软件,对某一型号的叶片裂纹的进行应力分布及轴向位移计算,通过分析叶片应力-时间函数曲线,得出应力集中加快裂纹扩展结论。同时,分析了导致出现裂纹和叶片断裂的多种因素,并提出了避免类似现象发生的若干建议。更多还原

【Abstract】 The rupture and flaw commonly happened to vanes are hidden dangers in safety existing in rotary machines.In this article,it applied large-scale finite element ANSYS software,accounted the stress distributing and the axial displacement of certain type blade,through the analysis stress-function of time curve of the blade,obtained the conclusion that concentration of stress to speed up the expansion of the crack.At the same time,analyzed the many kinds of factors of the blade breaking and crack,then proposed some correlation suggestions to avoid appear similar phenomenon.更多还原