Article(id=1228805361558287234, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228805359561802007, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2025.06.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1745942400000, receivedDateStr=2025-04-30, revisedDate=1749571200000, revisedDateStr=2025-06-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1770899628294, onlineDateStr=2026-02-12, pubDate=1749484800000, pubDateStr=2025-06-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770899628294, onlineIssueDateStr=2026-02-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770899628294, creator=13701087609, updateTime=1770899628294, updator=13701087609, issue=Issue{id=1228805359561802007, tenantId=1146029695717560320, journalId=1225147924628267009, year='2025', volume='38', issue='6', pageStart='1133', pageEnd='1362', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770899627819, creator=13701087609, updateTime=1770901542852, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228813391846896476, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228805359561802007, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228813391846896477, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228805359561802007, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1183, endPage=1189, ext={EN=ArticleExt(id=1228805361772196739, articleId=1228805361558287234, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Diagnosis of clamp loosening faults in aero engine accessory pipes, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To effectively detect and localize vibration faults such as clamp loosening in aero engine accessory pipes, this paper proposes a novel diagnosis method based on dynamic responses of accessory pipes and transmissibility functions. The dynamic model and equation of the faulty pipe are established based on the principle of structural similarity and dynamic similarity, where the impact of the fault is simulated as an additional nonlinear load acting on related position of the pipe. Through the analysis of structural dynamic characteristics, the relationship between dynamic responses and fault occurrence and location is derived and analyzed, a fault diagnosis method based on transmissibility function is then proposed, and the operating process of the method is summarized as well. The accuracy and practicality of the proposed fault diagnosis method are verified through multiple experimental examples. Theoretical analysis and testing results show that the diagnostic method proposed in this paper can accurately detect and localize the existence and position of the clamp loosening fault. Meanwhile, this diagnostic method is suitable for single and multiple clamp loosening faults in aero engine accessory pipes.
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为有效识别和定位航空发动机附件管路中的卡箍松动等振动故障,本文提出了基于附件管路动力学响应和传递函数的诊断方法。根据结构相近和动力学相似原则建立了故障附件管路的动力学模型和方程,其中故障的影响通过作用于管路相应位置的附加非线性力模拟。通过结构动力学分析,推导并确定了动力学响应与故障出现及其位置的对应关系,提出了基于传递函数的故障诊断方法,并归纳了方法的具体操作流程。通过试验测试案例验证了所提故障诊断方法的有效性和实用性。理论分析和测试结果表明,所提故障诊断方法可以准确地识别和定位航空发动机中附件管路卡箍松动故障是否出现以及出现后的具体位置。同时,该诊断方法适用于附件管路中单个卡箍松动故障以及多个卡箍松动故障的情况。
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Aero engine accessory pipe, figureFileSmall=m+ZVkm4nWUm+zCUHBByVhg==, figureFileBig=dL0uJEHuUeBjkdcOBp9u4A==, tableContent=null), ArticleFig(id=1228805367019270232, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=图1, caption=
航空发动机附件管路, figureFileSmall=m+ZVkm4nWUm+zCUHBByVhg==, figureFileBig=dL0uJEHuUeBjkdcOBp9u4A==, tableContent=null), ArticleFig(id=1228805367270928490, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Fig. 2, caption=
Multi-degree-of-freedom dynamic model, figureFileSmall=Z7Y9w/Mqjo2u+gr1tIvc4Q==, figureFileBig=IvGy3HoJZkMz/xjWAZwimw==, tableContent=null), ArticleFig(id=1228805367363203189, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=图2, caption=
多自由度动力学模型, figureFileSmall=Z7Y9w/Mqjo2u+gr1tIvc4Q==, figureFileBig=IvGy3HoJZkMz/xjWAZwimw==, tableContent=null), ArticleFig(id=1228805367442894974, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Fig. 3, caption=
Multi-degree-of-freedom dynamic sub-model, figureFileSmall=PjYE4u/CkhONMlB7njxw5w==, figureFileBig=6XRQiPRCERLGC/+MJEX8ng==, tableContent=null), ArticleFig(id=1228805367535169673, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=图3, caption=
多自由度动力学子模型, figureFileSmall=PjYE4u/CkhONMlB7njxw5w==, figureFileBig=6XRQiPRCERLGC/+MJEX8ng==, tableContent=null), ArticleFig(id=1228805367627444367, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Fig. 4, caption=
Operational process of the diagnosis method, figureFileSmall=KReuMHymzXckCsy6ceTfdw==, figureFileBig=7PHBQe53dyn5Xe//nSRt9Q==, tableContent=null), ArticleFig(id=1228805367740690583, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=图4, caption=
诊断方法的操作流程, figureFileSmall=KReuMHymzXckCsy6ceTfdw==, figureFileBig=7PHBQe53dyn5Xe//nSRt9Q==, tableContent=null), ArticleFig(id=1228805367807799453, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Fig. 5, caption=
Beam-like structure with bolted connections, figureFileSmall=mgU1IkH9sMBl+A05Cgs7WQ==, figureFileBig=YM1hCfdS5k2CIJRoOgZ15w==, tableContent=null), ArticleFig(id=1228805367891685538, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=图5, caption=
螺栓连接梁状结构, figureFileSmall=mgU1IkH9sMBl+A05Cgs7WQ==, figureFileBig=YM1hCfdS5k2CIJRoOgZ15w==, tableContent=null), ArticleFig(id=1228805367962988712, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Fig. 6, caption=
Setup of simulation cases, figureFileSmall=z5kwHKCd6FAG9ffhJ1d10Q==, figureFileBig=1mY2Z/1ft2+4bC3qvYyP0g==, tableContent=null), ArticleFig(id=1228805368034291886, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=图6, caption=
仿真案例设置, figureFileSmall=z5kwHKCd6FAG9ffhJ1d10Q==, figureFileBig=1mY2Z/1ft2+4bC3qvYyP0g==, tableContent=null), ArticleFig(id=1228805368105595060, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Fig. 7, caption=
Output responses of mass point m1 under the excitation 1 in case 1, figureFileSmall=w3XcNu5sEekC2d6kA8HG/g==, figureFileBig=8m+KgmNLGTcZOp7Wg1DOrw==, tableContent=null), ArticleFig(id=1228805368185286842, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=图7, caption=
案例1中质量点m1在激励1下的输出响应, figureFileSmall=w3XcNu5sEekC2d6kA8HG/g==, figureFileBig=8m+KgmNLGTcZOp7Wg1DOrw==, tableContent=null), ArticleFig(id=1228805368264978624, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Fig. 8, caption=
Test diagnosis results, figureFileSmall=m336UITIE1loCymro6VRUw==, figureFileBig=0J0b/S+IQmPXiiS5H45fvQ==, tableContent=null), ArticleFig(id=1228805368344670405, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=图8, caption=
试验诊断结果, figureFileSmall=m336UITIE1loCymro6VRUw==, figureFileBig=0J0b/S+IQmPXiiS5H45fvQ==, tableContent=null), ArticleFig(id=1228805368411779275, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Tab.1, caption=
Key parameters
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| 参数 | 含义 | 参数 | 含义 |
|---|
| M | 质量矩阵 | Ts,h(jΩ) | 传递函数 |
| C | 阻尼矩阵 | Ω | 转速/角频率 |
| K | 刚度矩阵 | | 参考特征 |
| 时域加速度向量 | | 诊断特征 |
| 时域速度向量 | ζi(jΩ) | 诊断因子 |
| xi(t) | 时域位移向量 | Xi(jΩ) | 输出频谱 |
| ui(t) | 时域激励向量 | Ui(jΩ) | 频域激励向量 |
| li(t) | 时域故障向量 | Li(jΩ) | 频域故障向量 |
), ArticleFig(id=1228805368483082450, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=表1, caption=
重要参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 含义 | 参数 | 含义 |
|---|
| M | 质量矩阵 | Ts,h(jΩ) | 传递函数 |
| C | 阻尼矩阵 | Ω | 转速/角频率 |
| K | 刚度矩阵 | | 参考特征 |
| 时域加速度向量 | | 诊断特征 |
| 时域速度向量 | ζi(jΩ) | 诊断因子 |
| xi(t) | 时域位移向量 | Xi(jΩ) | 输出频谱 |
| ui(t) | 时域激励向量 | Ui(jΩ) | 频域激励向量 |
| li(t) | 时域故障向量 | Li(jΩ) | 频域故障向量 |
), ArticleFig(id=1228805368613105877, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Tab.2, caption=
Parameters of test equipments
, figureFileSmall=null, figureFileBig=null, tableContent=
| 设备 | 参数 | 取值 |
|---|
| 加速度传感器 | 测量范围/g | ±40 |
| 共振频率/kHz | 35±3 |
| 灵敏度/(mV·g−1) | 100 |
| 信号发生器 | 采样率/(MSa·s−1) | 500 |
| 最大频率/MHz | 100 |
| 功率放大器 | 频率范围/kHz | DC-150 |
| 最大电压增益/dB | 17 |
| 模态激振器 | 频率范围/Hz | DC-5000 |
| 最大载荷/N | 100 |
), ArticleFig(id=1228805368701186267, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=表2, caption=
测试设备参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 设备 | 参数 | 取值 |
|---|
| 加速度传感器 | 测量范围/g | ±40 |
| 共振频率/kHz | 35±3 |
| 灵敏度/(mV·g−1) | 100 |
| 信号发生器 | 采样率/(MSa·s−1) | 500 |
| 最大频率/MHz | 100 |
| 功率放大器 | 频率范围/kHz | DC-150 |
| 最大电压增益/dB | 17 |
| 模态激振器 | 频率范围/Hz | DC-5000 |
| 最大载荷/N | 100 |
), ArticleFig(id=1228805368810238176, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Tab.3, caption=
Parameters of input excitation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 激励 | 幅值1/V | 相位1/(rad·s−1) | 幅值2/V | 相位2/(rad·s−1) |
|---|
| 1 | 5.98 | 2.54 | 0.63 | 2.75 |
| 2 | 9.97 | −1.51 | 2.0884 | −1.48 |
), ArticleFig(id=1228805368902512871, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=表3, caption=
输入激励参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 激励 | 幅值1/V | 相位1/(rad·s−1) | 幅值2/V | 相位2/(rad·s−1) |
|---|
| 1 | 5.98 | 2.54 | 0.63 | 2.75 |
| 2 | 9.97 | −1.51 | 2.0884 | −1.48 |
), ArticleFig(id=1228805369003176175, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=EN, label=Tab.4, caption=
Features and factors of fault diagnosis
, figureFileSmall=null, figureFileBig=null, tableContent=
| 案例 | 特征 | 质量点m2 | 质量点m3 | 质量点m4 |
|---|
| 1 | 参考特征 | 1.9615 | 5.3917 | 8.7926 |
| 2 | 故障特征 | 3.3079 | 5.6931 | 8.8833 |
| 诊断因子 | 68.64% | 5.59% | 1.03% |
| 3 | 故障特征 | 2.6324 | 5.2248 | 9.8477 |
| 诊断因子 | 34.20% | 3.10% | 11.99% |
), ArticleFig(id=1228805369103839478, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805361558287234, language=CN, label=表4, caption=
故障诊断特征和因子
, figureFileSmall=null, figureFileBig=null, tableContent=
| 案例 | 特征 | 质量点m2 | 质量点m3 | 质量点m4 |
|---|
| 1 | 参考特征 | 1.9615 | 5.3917 | 8.7926 |
| 2 | 故障特征 | 3.3079 | 5.6931 | 8.8833 |
| 诊断因子 | 68.64% | 5.59% | 1.03% |
| 3 | 故障特征 | 2.6324 | 5.2248 | 9.8477 |
| 诊断因子 | 34.20% | 3.10% | 11.99% |
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