高速柔性转子临界转速随支承刚度的变化规律  

Variation Laws of Critical Speeds of a High-speed Flexible Rotor with Different Supporting Stiffness

作　　者：邓旺群[1,2] 聂卫健 何萍[1] 郭天才[1,2] 杨海[1,2] 

机构地区：[1]中国航空动力机械研究所,湖南株洲412002 [2]航空发动机振动技术航空科技重点实验室,湖南株洲412002

出　　处：《噪声与振动控制》2015年第3期98-101,共4页Noise and Vibration Control

基　　金：航空科学基金(20112108001和2013ZB08001)

摘　　要：建立某小型涡扇发动机低压转子的有限元分析模型,用SAMCEF/ROTOR分析软件对不同支承刚度条件下低压转子的临界转速系统地进行计算分析,揭示压转子的前三阶临界转速随各支承刚度的变化规律,为低压转子的临界转速设计和基于支承刚度的临界转速调整提供了参考依据。Finite element model of a low-pressure rotor of a turbofan engine was established. The critical speeds of the rotor with different supporting stiffness were systematically calculated and analyzed by SAMCEF/ROTOR software. The variation laws of the first three-order critical speeds with different supporting stiffness were revealed. The research results provide references and bases for critical speed design and adjustment based on supporting stiffness change of the lowpressure rotor.

关 键 词：振动与波 涡扇发动机 低压转子 有限元法 支承刚度 临界转速 变化规律 

分 类 号：V231.92[航空宇航科学与技术—航空宇航推进理论与工程]