旋转叶片-柔性机匣碰摩振动响应分析

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英文篇名：Rub vibration responses of rotating blade and flexible casing 作者：郭旭民 ; 孙祺 ; 马辉 ; 孙帆 英文作者：GUO Xumin;SUN Qi;MA Hui;SUN Fan;School of Mechanical Engineering and Automation, Northeastern University;Key Lab of Vibration and Control of Aero-Propulsion Systems Ministry of Education of China, Northeastern University;State Key Lab of Mechanical System and Vibration, Shanghai Jiao Tong University; 关键词：圆柱壳 ; 叶片-柔性机匣碰摩 ; 振动响应 ; 节径振动 英文关键词：cylindrical shell;;blade-flexible casing rubbing;;vibration response;;pitch diameter vibration 中文刊名：ZDCJ 英文刊名：Journal of Vibration and Shock 机构：东北大学机械工程与自动化学院;东北大学航空动力装备振动及控制教育部重点实验室;上海交通大学机械系统与振动国家重点实验室; 出版日期：2019-03-15 出版单位：振动与冲击 年：2019 期：v.38;No.337 基金：国家自然科学基金(11772089);; 中央高校基金科研业务费专项资金(N170308028);; 辽宁省高等学校创新人才支持计划(LR2017035);; 机械系统与振动国家重点实验室课题资助项目(MSV201707) 语种：中文; 页：ZDCJ201905024 页数：7 CN：05 ISSN：31-1316/TU 分类号：170-176

摘要

以旋转叶片-柔性机匣为研究对象,基于ANSYS分析软件,考虑叶片旋转导致的离心刚化,旋转软化和科氏力效应,分别采用悬臂梁和圆柱壳来模拟叶片和柔性机匣,分析了碰摩导致的机匣及叶片振动,并与将机匣简化为集中质量点模型进行了对比。研究结果表明,考虑机匣柔性时能观察到由碰摩诱发的机匣节径振动,并且碰摩力和叶片振动响应相对于集中质量点模型均呈现出降低趋势。
        A rotating blade and a flexible casing were taken as the study object, and influences of centrifugal stiffening, spin softening and Coriolis force caused by blade-rotating were considered. A cantilever beam and a cylindrical shell were used to imitate the blade and flexible casing, respectively and analyze their vibrations due to their rubbing based on the software ANSYS. The simulation results were compared with those obtained during the casing being simplified as a lumped mass point. The results showed that the pitch diameter vibration of the casing induced by rubbing is observed when considering the casing's flexibility; rubbing force and blade vibration response have a declining trend compared with those obtained using the casing's lumped mass point model.

引文

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