摘要
选取航空发动机带内环的典型静子结构为研究对象,以周向弯曲振动的模态频率为分析目的,用有限单元法对结构进行振动模态分析。采用截面等效的方法用矩形截面的变截面梁取代静子叶片对结构建立简化的有限元模型,对比了简化前后的分析结果。通过分析比较简化前后的计算精度与计算规模,结构中用梁取代叶片的简化模型可以在保证计算精度的同时有限元的计算规模显著减小。
The typical stator struetut＇e with inner ring of an aeroengine was selected as studying objects. Modal analysis of the structure was performed with finite element method to analyze the modal frequency of circumferential bending vibt＋ation. The statnr blade was simplified into a rectangular beam of variable cross section with the method of section equivalent. Through comparittg the calculation preeision and the calculation scale of the two muodels, the simplified model can not （rely ensure the calculation precision but also reduce the calculation scale obviously.
出处
《机械工程师》
2013年第3期41-42,共2页
Mechanical Engineer
