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ID:56382380
大小:371.00 KB
页数:19页
时间:2020-06-14
《热效应下的屈曲分析.ppt》由会员上传分享,免费在线阅读,更多相关内容在PPT专区-天天文库。
1、IN-SERVICEBUCKLINGOFHEATEDPIPELINES王瑞丰2010-04-08Keywordsbuckling,submarinepipeline,thermalpressure.OffshoreplatformsSubmarinepipelinesTheengineeringbackgroundCompressionforcesmaybeinducedinpipelinesbytherestrainofaxialextensionsduetotemperaturechangesorothercauses.Theforcesmaybec
2、ausebucklingofpipeline.ThefactorsofinfluencetheaxialloadinthepipelineMechanicalpropertiesofthepipeline;Weightofthepipeline;Theinitialtensionafterlaying;Thepressuredifferenceacrossthepipewall;Temperaturevariations.TwomajorcausesofcompressiveforceThermalpressureloadingsInternalpres
3、sureloadingsTheforceP0createdbyfullrestraintofthermalexpansionThefreeaxialstrainTheaxialcompressiveforce,whenεiscompletelyrestrainedBucklingmodesVerticalbucklingLateralbucklingVerticalbucklingmodelateralbucklingmodesGodblessyou!
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