摘要
利用有限元分析软件分析了某型高压涡轮叶顶间隙在不同工况下随时间的变化。采用分段加载方法对模型施加温度和压力边界条件。计算结果与实验数据的对比分析表明:涡轮叶片位移对叶顶间隙变化的贡献不大,温度和转速是影响轮盘径向尺寸变化的主要因素,而温度是影响机匣和叶片变形的主要因素。
The high pressure turbine tip clearance variation versus time under different operating conditions were analyzed by the finite element method.The boundary conditions about the temperature and pressure were loaded by means of the segmental application method.The calculation results and their comparison with the experimental data show that the displacement of the blade makes a little contribution to the tip clearance variation,the temperature and the rotational speed are the key issues for the radial deformat...
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2009年第1期33-37,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
军工项目
关键词
机床
叶顶间隙
有限元法
高压涡轮
分段加载
machine tool
tip clearance
finite element method
high pressure turbine（HPT）
segmental application of boundary conditions
