Tian Gao , Si-Min Yuan , Zhi-Qi Sun , Qiang Ma , Shu-Qian Cao
{"title":"具有两个或多个缺陷的轴间轴承突发性脉冲振动的时滞动力学行为","authors":"Tian Gao , Si-Min Yuan , Zhi-Qi Sun , Qiang Ma , Shu-Qian Cao","doi":"10.1016/j.ymssp.2025.113422","DOIUrl":null,"url":null,"abstract":"<div><div>Due to the complex installation environment and challenging lubrication conditions, inter-shaft bearings are susceptible to localized faults, which can induce two basic vibration types: paroxysmal impulse vibrations and continuous impulse vibrations. This paper investigates the time-delayed dynamic behavior of paroxysmal impulse vibration in inter-shaft bearings under multiple localized fault conditions. A dynamic model for inter-shaft bearings with multiple localized faults is developed using a lumped-parameter method. The vibration response of an inter-shaft bearing-dual rotor system is obtained through numerical integration. The results reveal that multiple localized defects can trigger distinct types of impulse vibrations within a paroxysmal impulse vibration response, and there is a regular time-delayed dynamic behavior between these distinct types of impulse vibrations. The time-delayed dynamic characteristics of paroxysmal impulse vibration are analyzed on a large time scale, while the underlying mechanical mechanisms are elucidated on a small time scale. A precise prediction method is developed to forecast this phenomenon. The derived prediction formula can accurately estimate the time interval of paroxysmal impulse vibrations caused by a single defect, as well as the specific delay times between distinct types of impulse vibrations resulting from multiple defects. Vibration experiments on inter-shaft bearings validate the time-delayed dynamic phenomenon of paroxysmal impulse vibration induced by multiple faults. Additionally, the experimental results confirm the effectiveness of the proposed prediction method in accurately forecasting the time-delayed dynamic behavior. This research provides valuable insights into the vibration mechanisms of inter-shaft bearings with multiple localized faults, laying a theoretical foundation for the health monitoring of inter-shaft bearings.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"240 ","pages":"Article 113422"},"PeriodicalIF":8.9000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Time-delayed dynamic behavior of paroxysmal impulse vibrations in inter-shaft bearings with two or multiple defects\",\"authors\":\"Tian Gao , Si-Min Yuan , Zhi-Qi Sun , Qiang Ma , Shu-Qian Cao\",\"doi\":\"10.1016/j.ymssp.2025.113422\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Due to the complex installation environment and challenging lubrication conditions, inter-shaft bearings are susceptible to localized faults, which can induce two basic vibration types: paroxysmal impulse vibrations and continuous impulse vibrations. This paper investigates the time-delayed dynamic behavior of paroxysmal impulse vibration in inter-shaft bearings under multiple localized fault conditions. A dynamic model for inter-shaft bearings with multiple localized faults is developed using a lumped-parameter method. The vibration response of an inter-shaft bearing-dual rotor system is obtained through numerical integration. The results reveal that multiple localized defects can trigger distinct types of impulse vibrations within a paroxysmal impulse vibration response, and there is a regular time-delayed dynamic behavior between these distinct types of impulse vibrations. The time-delayed dynamic characteristics of paroxysmal impulse vibration are analyzed on a large time scale, while the underlying mechanical mechanisms are elucidated on a small time scale. A precise prediction method is developed to forecast this phenomenon. The derived prediction formula can accurately estimate the time interval of paroxysmal impulse vibrations caused by a single defect, as well as the specific delay times between distinct types of impulse vibrations resulting from multiple defects. Vibration experiments on inter-shaft bearings validate the time-delayed dynamic phenomenon of paroxysmal impulse vibration induced by multiple faults. Additionally, the experimental results confirm the effectiveness of the proposed prediction method in accurately forecasting the time-delayed dynamic behavior. This research provides valuable insights into the vibration mechanisms of inter-shaft bearings with multiple localized faults, laying a theoretical foundation for the health monitoring of inter-shaft bearings.</div></div>\",\"PeriodicalId\":51124,\"journal\":{\"name\":\"Mechanical Systems and Signal Processing\",\"volume\":\"240 \",\"pages\":\"Article 113422\"},\"PeriodicalIF\":8.9000,\"publicationDate\":\"2025-09-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Mechanical Systems and Signal Processing\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0888327025011239\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mechanical Systems and Signal Processing","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0888327025011239","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Time-delayed dynamic behavior of paroxysmal impulse vibrations in inter-shaft bearings with two or multiple defects
Due to the complex installation environment and challenging lubrication conditions, inter-shaft bearings are susceptible to localized faults, which can induce two basic vibration types: paroxysmal impulse vibrations and continuous impulse vibrations. This paper investigates the time-delayed dynamic behavior of paroxysmal impulse vibration in inter-shaft bearings under multiple localized fault conditions. A dynamic model for inter-shaft bearings with multiple localized faults is developed using a lumped-parameter method. The vibration response of an inter-shaft bearing-dual rotor system is obtained through numerical integration. The results reveal that multiple localized defects can trigger distinct types of impulse vibrations within a paroxysmal impulse vibration response, and there is a regular time-delayed dynamic behavior between these distinct types of impulse vibrations. The time-delayed dynamic characteristics of paroxysmal impulse vibration are analyzed on a large time scale, while the underlying mechanical mechanisms are elucidated on a small time scale. A precise prediction method is developed to forecast this phenomenon. The derived prediction formula can accurately estimate the time interval of paroxysmal impulse vibrations caused by a single defect, as well as the specific delay times between distinct types of impulse vibrations resulting from multiple defects. Vibration experiments on inter-shaft bearings validate the time-delayed dynamic phenomenon of paroxysmal impulse vibration induced by multiple faults. Additionally, the experimental results confirm the effectiveness of the proposed prediction method in accurately forecasting the time-delayed dynamic behavior. This research provides valuable insights into the vibration mechanisms of inter-shaft bearings with multiple localized faults, laying a theoretical foundation for the health monitoring of inter-shaft bearings.
期刊介绍:
Journal Name: Mechanical Systems and Signal Processing (MSSP)
Interdisciplinary Focus:
Mechanical, Aerospace, and Civil Engineering
Purpose:Reporting scientific advancements of the highest quality
Arising from new techniques in sensing, instrumentation, signal processing, modelling, and control of dynamic systems