{"title":"支承在润滑不良的轴颈轴承上的转子的次同步振动","authors":"L. Smolík, P. Polach, J. Rendl","doi":"10.21495/71-0-339","DOIUrl":null,"url":null,"abstract":": This paper aims to the modelling and investigation of sub-synchronous vibrations of a rotor supported on poorly lubricated journal bearings. Bores for an oil supply are located in the lower halves of bearing shells. It is shown that the poor lubrication of the described bearings may lead to an occurrence of stable vibrations at the frequency ca. 0.9 to the rotor speed. Simulations are performed using a multi-body approach for modelling rotating systems. Forces acting in journal bearings are evaluated employing a mass-conserving finite element solution of the Reynolds equation.","PeriodicalId":197313,"journal":{"name":"Engineering Mechanics 2019","volume":"32 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"SUB-SYNCHRONOUS VIBRATIONS OF A ROTOR SUPPORTED ON POORLY LUBRICATED JOURNAL BEARINGS\",\"authors\":\"L. Smolík, P. Polach, J. Rendl\",\"doi\":\"10.21495/71-0-339\",\"DOIUrl\":null,\"url\":null,\"abstract\":\": This paper aims to the modelling and investigation of sub-synchronous vibrations of a rotor supported on poorly lubricated journal bearings. Bores for an oil supply are located in the lower halves of bearing shells. It is shown that the poor lubrication of the described bearings may lead to an occurrence of stable vibrations at the frequency ca. 0.9 to the rotor speed. Simulations are performed using a multi-body approach for modelling rotating systems. Forces acting in journal bearings are evaluated employing a mass-conserving finite element solution of the Reynolds equation.\",\"PeriodicalId\":197313,\"journal\":{\"name\":\"Engineering Mechanics 2019\",\"volume\":\"32 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-05-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Engineering Mechanics 2019\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21495/71-0-339\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Mechanics 2019","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21495/71-0-339","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
SUB-SYNCHRONOUS VIBRATIONS OF A ROTOR SUPPORTED ON POORLY LUBRICATED JOURNAL BEARINGS
: This paper aims to the modelling and investigation of sub-synchronous vibrations of a rotor supported on poorly lubricated journal bearings. Bores for an oil supply are located in the lower halves of bearing shells. It is shown that the poor lubrication of the described bearings may lead to an occurrence of stable vibrations at the frequency ca. 0.9 to the rotor speed. Simulations are performed using a multi-body approach for modelling rotating systems. Forces acting in journal bearings are evaluated employing a mass-conserving finite element solution of the Reynolds equation.
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