RUB-IMPACT

作品数：14被引量：28H指数：3
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相关领域：机械工程更多>>
相关作者：陈予恕曹树谦丁千叶明张雨更多>>
相关机构：长沙交通学院天津大学南京航空航天大学更多>>
相关期刊：《Transactions of Tianjin University》《Journal of Southeast University(English Edition)》《Communications in Nonlinear Science and Numerical Simulation》《Computers, Materials & Continua》更多>>
相关基金：国家自然科学基金国家重点基础研究发展计划国防基金中国博士后科学基金更多>>
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Transient state analysis of a rub-impact rotor system during maneuvering flight
《Chinese Journal of Aeronautics》2024年第7期236-251,共16页Jun WANG Yunfei LIU Zhaoye QIN Liang MA Fulei CHU 
supported by the National Natural Science Foundation of China(No.12202229);the Science Center for Gas Turbine Project,China(No.P2022-B-III-002-001);the Scientific Research Projects of Tianjin Education Commission,China(Nos.2020KJ018,2020KJ060).
Maneuvering flight substantially affects the dynamic behavior of rotors;particularly,such flight may cause rubbing between a rotor and stator,which is one of the most serious damages in aircraft engines.In this paper,...
关键词：Maneuvering flight Rub impact Rotor system Dynamic response Impact response 
轴径向耦合热效应下带叶鼓筒转子系统碰摩动力学特性
《Acta Mechanica Sinica》2024年第3期214-226,共13页寇海江 张耀文 Heow Pueh Lee 史宇翔 杜娇娇 竺志大 张帆 曾励 
supported by the National Natural Science Foundation of China (Grant No.52005434);the China Scholarship Council (Grant No.202008320145);the China Postdoctoral Science Foundation (Grant No.2023M733151);the Natural Science Foundation of Jiangsu Province (Grant No.BK20190912).
燃气轮机高温载荷使带叶薄壁鼓筒转子发生严重的碰摩故障,阐明其动力学特性对避免此类故障具有重要意义.本文建立了高温热载荷下带叶薄壁鼓筒转子热弹耦合动力学模型.根据实际的热场分析结果,获得了鼓筒内轴径向耦合温度解析函数,并推...
关键词：Bladed rotor Axial-radial heat conduction RUB-IMPACT High temperature 
Modal analysis strategy and nonlinear dynamic characteristics of complicated aero-engine dual-rotor system with rub-impact被引量：7
《Chinese Journal of Aeronautics》2022年第1期184-203,共20页Pingchao YU Guo CHEN Lunxu LI 
support from the National Natural Science Foundation of China(Grant No.52005252);the Fundamental Research Funds for the Central Universities,China(Grant No.NT2020018);the National Science and Technology Major Project(2017-IV-0008-0045).
This paper aims to gain insight into the nonlinear modal characteristics and the possible influence of the modes on the responses for the practical dual-rotor system with rub-impact in aero-engine.The finite solid ele...
关键词：Dual-rotor system INSTABILITY Modal characteristics RUB-IMPACT Vibration response 
A Rub-Impact Recognition Method Based on Improved Convolutional Neural Network
《Computers, Materials & Continua》2020年第4期283-299,共17页Weibo Yang Jing Li Wei Peng Aidong Deng 
The authors would like to acknowledge the Six Talent Peaks Project in Jiangsu Province[XCL-CXTD-007];China Postdoctoral Science Foundation[2018M630559]for their financial support in this project。
Based on the theory of modal acoustic emission(AE),when the convolutional neural network(CNN)is used to identify rotor rub-impact faults,the training data has a small sample size,and the AE sound segment belongs to a ...
关键词：Acoustic emission signal deep learning convolutional neural network spectral features RUB-IMPACT 
Modal characteristics analysis for a flexible rotor with non-smooth constraint due to intermittent rub-impact被引量：9
《Chinese Journal of Aeronautics》2018年第3期498-513,共16页Jie HONG Pingchao YU Dayi ZHANG Zhichao LIANG 
the financial support from the National Natural Science Foundation of China(Nos.11772022,51575022 and 51475021)
Intermittent rub-impact, during which the contact between rotor and stator is characterized by a ‘‘bouncing＂ or intermittent type of behavior, is one of the most common rubbing forms in rotating machinery. When the...
关键词：Flexible rotor Intermittent rub-impact Instabifity Modal characteristics Non-smooth constraint 
Dynamic Characteristics of Multi-degrees of Freedom System Rotor-bearing System with Coupling Faults of Rub-impact and Crack被引量：9
《Chinese Journal of Mechanical Engineering》2014年第4期785-792,共8页REN Zhaohui ZHOU Shihua LI Chaofeng WEN Bangchun 
Supported by National Basic Research Program of China(973 Program,Grant No.2012CB026000)
Extensive studies on rotor systems with single or coupled multiple faults have been carried out. However these studies are limited to single-span rotor systems. A finite element model for a complex rotor-bearing syste...
关键词：rotor-bearing system RUB-IMPACT CRACK dynamic characteristic INSTABILITY 
Dynamical Analysis of Rub-impact Rotor System with Asymmetric Oil Film Force
《International Journal of Plant Engineering and Management》2010年第3期181-187,共7页CONG Rui GAO Guang-fu LIU Shu-lin YU Hai-jun 
Considering the effect of non-symmetry film force, nonlinear stiffness and nonlinear friction force, a dynamical model of rub-impact rotor system is established, then the nonlinear dynamical behavior is studied by num...
关键词：rub-impact rotor non-symmetry film force nonlinear stiffness nonlinear friction force chaotic behavior brifurcation 
Fault Diagnosis of a Rotor Based on a Lifting Wavelet and Local Wave被引量：1
《International Journal of Plant Engineering and Management》2010年第1期13-17,共5页WANG Feng-li GAO Hong-tao ZHAO De-you 
supported by National Natural Science Foundation of China under Grant No. 50805014
Aiming at the mode mixture in local wave decomposition（LWD） caused by a noise signal, the original data is preprocessed using the lifting wavelet transformation to suppress abnormal interference of noise and improve...
关键词：local wave lifting scheme fault diagnosis envelope demodulation RUB-IMPACT 
DETECTION OF EARLY RUB-IMPACT IN ROTORS VIA HIGHER-ORDER TIME-FREQUENCY ENTROPY被引量：1
《Chinese Journal of Mechanical Engineering》2004年第4期614-617,共4页ChenZhongsheng YangYongmin HuZheng ShenGuoji 
ThisprojectissupportedbyNationalDefenseMaintenanceEngineeringFoundationofChina(No.413270303).
Due to the calculation problem of classical methods (such as Lyapunovexponent) for chaotic behavior, a new method of identifying nonlinear dynamics with higher-ordertime-frequency entropy (HOTFE) based on time-frequen...
关键词：Higher-order time-frequeney entropy(HOTFE) Chaotic behavior Early faults RUB-IMPACT 
INFLUENCES ON COUPLED LATERAL AND TORSION VIBRATION BEHAVIOR OF RUB-IMPACT ROTOR BY ROTOR-TO-STATOR CLEARANCE
《Chinese Journal of Mechanical Engineering》2004年第2期210-214,共5页Gu Yujiong He Chengbing Yang Kun Zhang Jianqiang Department of Power Engineering,North China Electric Power University,Beijing 102206, China 
This project is supported by State Power Company Science and Technology Foundation of China(No.SP11-2002-02-28).
With the establishment of the nonlinear coupled lateral and torsion vibrationequations of rub-impact Jeffcott rotor and through numerical simulations, the influences on lateraland torsion vibration behavior by rotor-t...
关键词：Rub-impact rotor Rotor-to-stator clearance Coupled lateral and torsionvibrations 
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