Dynamics research on the rubbing process and rubbing forms of rotor–blade–casing​ systems

拓本 套管 刀(考古) 转子(电动) 过程(计算) 机械工程 动力学(音乐) 结构工程 计算机科学 工程类 声学 物理 操作系统
作者
Kang Yanhong,Shuqian Cao,Yuanhang Hou,Ning Chen,Bo Li
出处
期刊:International Journal of Non-linear Mechanics [Elsevier]
卷期号:147: 104242-104242
标识
DOI:10.1016/j.ijnonlinmec.2022.104242
摘要

Rubbing is a common phenomenon in aero engines. Serious rubbing will cause failure, and even lead to accidents. Blade-casing rubbing is complicated, the rubbing process, rubbing positions, and rubbing forms are important factors to describe the rubbing of blade and casing. The details of these problems are lacking in published works. This paper aims to gain insight into the process and characteristics of blades participating in rubbing and propose an experimental method for quantitatively judging the blades with rub-impact faults. Firstly, a rotor-blade-casing dynamic model with the consideration of the flexibility of blades is established. After that, using Poincaré sections and bifurcation diagrams of the rotor, the influence of the number of blades involved in rubbing on the motion behavior of the rotor is discussed. Then, the process of the blades participating in the rubbing, the rubbing forms, and rubbing positions under the speed-up condition are analyzed. Besides, the influence of the gravity of the system on the rubbing process and the motion state of the rotor is analyzed. Finally, a test rig with four blades is built. Based on the strain signals of four blades, an evaluation index that can quantitatively judge the blades involved in rubbing is defined to verify the complex rubbing process. The results show that the rubbing between blades and casing will undergo complex rubbing forms; different forms of rubbing have different rubbing parts; the number of blades involved in rubbing will affect the motion behavior and the smooth operation of the rotor system. This research can provide some reference for rubbing fault diagnosis in engineering. • The rotor-blade-casing system will experience a complex rubbing process and rubbing patterns when speeding up. • Under the influence of gravity, the rubbing positions of different rubbing patterns are different. • The number of blades participating in rubbing will affect the motion behavior and the smooth operation of the system. • Based on the strain signal, a quantitative index V ϵ is proposed to judge whether the blade rubs or not.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
大海发布了新的文献求助10
4秒前
zhangrun01完成签到,获得积分10
6秒前
龙大完成签到,获得积分10
6秒前
娇哥哥发布了新的文献求助10
6秒前
8秒前
9秒前
田様应助wangjun采纳,获得10
13秒前
13秒前
Ain关闭了Ain文献求助
14秒前
内向秋寒发布了新的文献求助10
17秒前
17秒前
23秒前
24秒前
不讲道梨完成签到,获得积分10
26秒前
Tloml-dw010530完成签到,获得积分10
26秒前
合适怜南完成签到,获得积分20
27秒前
ssnha完成签到 ,获得积分10
28秒前
娇哥哥完成签到,获得积分10
29秒前
30秒前
xiaoxiaojiang发布了新的文献求助10
31秒前
闪闪完成签到 ,获得积分10
33秒前
34秒前
玉米烤肠完成签到 ,获得积分10
39秒前
微风皱发布了新的文献求助30
39秒前
InfoNinja应助俏皮朝雪采纳,获得20
39秒前
JamesPei应助neckerzhu采纳,获得10
39秒前
40秒前
007完成签到,获得积分20
41秒前
42秒前
43秒前
芈冖发布了新的文献求助30
44秒前
研友_Z60x5L完成签到 ,获得积分10
44秒前
林克发布了新的文献求助10
48秒前
林宥嘉发布了新的文献求助10
52秒前
陶醉完成签到,获得积分10
52秒前
JamesPei应助问心采纳,获得10
53秒前
53秒前
兮颜完成签到,获得积分10
54秒前
斯文觅云发布了新的文献求助10
57秒前
高分求助中
LNG地下式貯槽指針(JGA指-107) 1000
LNG地上式貯槽指針 (JGA指 ; 108) 1000
Preparation and Characterization of Five Amino-Modified Hyper-Crosslinked Polymers and Performance Evaluation for Aged Transformer Oil Reclamation 700
Operative Techniques in Pediatric Orthopaedic Surgery 510
How Stories Change Us A Developmental Science of Stories from Fiction and Real Life 500
九经直音韵母研究 500
Full waveform acoustic data processing 500
热门求助领域 (近24小时)
化学 医学 材料科学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 物理化学 催化作用 免疫学 细胞生物学 电极
热门帖子
关注 科研通微信公众号,转发送积分 2930764
求助须知:如何正确求助?哪些是违规求助? 2582683
关于积分的说明 6964694
捐赠科研通 2231176
什么是DOI,文献DOI怎么找? 1185133
版权声明 589595
科研通“疑难数据库(出版商)”最低求助积分说明 580192