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ID:52223658
大小:3.00 MB
页数:6页
时间:2020-03-25
《高阻尼黏弹性橡胶连梁阻尼器力学性能试验研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、建笪结掏堂握』Q旦盟皇!Q!旦四鱼i篮曼业!!旦!!!委};差盘:≥竺筮蒌翌囡文章编号:1000—6869(2017)03—0158—06DOI:10.14006/j.jzjgxb.2017.03.018高阻尼黏弹性橡胶连梁阻尼器力学性能试验研究王玉璋1,潘鹏2,邓开来3,高田友和4,何飞4(1.清华大学土木工程系,北京100084;2.清华大学土木工程安全与耐久教育部重点实验室,北京100084;3.西南交通大学桥梁工程系,四川I成都610031;4.日本住友理工株式会社,爱知县小牧市4858550)摘要:黏弹性橡胶阻尼器是一种兼
2、具黏滞性和弹性两种特性的阻尼器,耗能能力良好,可以同时为结构提供附加刚度和附加阻尼。通过对高阻尼黏弹性橡胶连梁阻尼器进行循环加载试验,研究了其基本力学性能,分析了该阻尼器在低周疲劳加载和高周疲劳加载下的基本力学特性。研究结果表明:高阻尼黏弹性橡胶连梁阻尼器的耗能能力优良;该阻尼器的储存刚度、损失刚度、损失系数受变形幅值的影响较大,受加载频率影响较小;等效阻尼系数与频率呈现反比例函数关系;该阻尼器的基本力学性能在低周和高周疲劳加载下呈现出较明显的衰减。关键词:高阻尼;黏弹性橡胶;连梁阻尼器;疲劳试验;力学性能中图分类号:TU352.1
3、03文献标志码:AExperimentalstudyonhigh—dampingviscoelasticrubbercouplingbeamdamperWANGYuzhan91,PANPen92,DENGKailai’,TAKADATomokazu4.HEFei4(1.DepartmentofCivilEngineering,TsinghuaUniversity,Beijing100084,China;2.KeyLaboratoryofCivilEngineeringSafetyandDurabilityofChinaEducati
4、onMinistry,TsinghuaUniversity,Beijing100084,China;3.DepartmentofBridgeEngineering,SouthwestJiaotongUniversity,Chengdu610031,China;4.SumitomoRikoCompanyLimited.KomakiPlant4858550.Japan)Abstract:Viscoelasticrubberdampersprovidebothelasticityandviscidity,aswellassatisfact
5、oryenergydissipationcapacity,whichcouldincreasethestiffnessanddampingofthestructures.Inthisstudy,testsonthehigh—dampingviscoelasticrubbercouplingbeamdamperwerecarriedout,focusingonthebasicmechanicalpropertiesofthedamper,includingthelowandhighcyclefatigueperformanceofth
6、eviscoelasticrubberdamper.Majorconclusionsobtainedfromthisstudyareasfollows:thehigh—dampingviscoelasticrubbercouplingbeamdamperpresentsthesatisfactoryenergydissipationcapacity;thestoragestiffness,lossstiffnessandlosscoefficientareobviouslyaffectedbytheloadingamplitude,
7、whiletheinfluenceofloadingfrequencyisrathernegligible;theequivalentdampingcoefficientpresentedinversely—proportionalrelationshipwithloadingamplitudeandfrequency.Themechanicalpropertiesofthedamperexhibitsnotabledegradationwhensubjectedtolowcycleandhighcyclefatiguetests.
8、Keywords:highdamping;viscoelasticrubber;couplingbeamdamper;fatiguetest;mechanicalbehavior基金项目:国家自然科学基金项目(51422809,515
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