一种橡胶黏弹性阻尼器性能试验及理论模型研究.docx

一种橡胶黏弹性阻尼器性能试验及理论模型研究
摘要：
本文研究了一种橡胶黏弹性阻尼器的性能试验及理论模型，通过实验测量了阻尼器关键参数，并建立了阻尼器的理论模型。结果表明，该阻尼器具有良好的阻尼性能和可靠性，其阻尼力和速度之间的关系符合指数函数规律。阻尼器理论模型与实验结果具有较好的一致性，可为阻尼器的设计和应用提供参考。
关键词：橡胶黏弹性阻尼器；性能试验；理论模型；阻尼力；速度。
Abstract：
Thispaperstudiestheperformancetestandtheoreticalmodelofarubberviscoelasticdamper.Thekeyparametersofthedamperweremeasuredthroughexperiments,andthetheoreticalmodelofthedamperwasestablished.Theresultsshowthatthedamperhasgooddampingperformanceandreliability,andtherelationshipbetweendampingforceandvelocityconformstotheexponentialfunctionlaw.Thetheoreticalmodelofthedamperhasgoodconsistencywiththeexperimentalresults,whichcanprovidereferenceforthedesignandapplicationofthedamper.
Keywords:rubberviscoelasticdamper,performancetest,theoreticalmodel,dampingforce,velocity.
1.Introduction
Inengineeringpractice,thevibrationandshockofmechanicalsystemsoftenhaveadverseeffectsonthestability,accuracyandlifeofthesystems,andevencauseserioussafetyaccidents.Therefore,itisnecessarytousedampingdevicestoreducethevibrationandshockofmechanicalsystems.Amongthem,rubberviscoelasticdampershavebeenwidelyusedduetotheirsimplestructure,gooddampingperformance,lowcost,andeasyinstallationandmaintenance.
However,therearestillsomeproblemsandchallengesinthedesignandapplicationofrubberviscoelasticdampers.Forexample,thedampingforceandvelocityofthedamperarenotpredictableandcontrollable,whichmakesitdifficulttooptimizethedampingperformanceofthedamperandensureitsreliabilityandsafety.Therefore,thestudyoftheperformancetestandtheoreticalmodelofrubberviscoelasticdampershasimportanttheoreticalandpracticalsignificance.
2.Experimentalmethod
Therubberviscoelasticdamperusedinthisstudyisacylindricalstructurewithadiameterof50mmandalengthof100mm.Therubbermaterialismadeofnaturalrubberwithahardnessof60±5degrees.Theexperimentalsystemconsistsofadamper,avibrationexciter,adisplacementsensor,aforcesensor,andadataacquisitionandprocessingsystem.Thedampingforceandvelocityofthedamperweremeasuredunderdifferentexcitationfrequenciesandamplit