约束阻尼型隔振器粘弹材料振动温升研究
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摘要
从非线性粘弹材料的动态耗能特性出发,运用渐进积分方法建立的数学模型分析了约束阻尼型隔振器在正弦载荷作用过程中的粘弹材料剪切温升历程,并对设计的剪切型约束阻尼隔振器进行正弦扫频实验。用压电传感器记录其加速度变化历程,同时使用红外线测温仪测定隔振器中粘弹材料的温升历程。通过理论曲线与试验曲线的对比,二者相似度达到90%以上,验证了温升理论模型的正确性。研究结论合理解释了不同量级下隔振器固有频率的变化以及隔振系统隔振效果的变化,振动温升变化对研究非线性粘弹性材料阻尼性能贡献、材料热损伤和破坏提供了参考依据。
Based on the dynamic energy dissipation characteristics of nonlinear viscoelastic material,this paper established a mathematical modal to analysis the shearing temperature-increase process of viscoelastic material under sinusoidal force,and designed a sine sweep experiment using the constrained damping vibration isolator.The acceleration changing history and the temperature-increase process were both recorded by experimental instruments.Comparing with the theoretical curve and the experimental curve,the similarity degree reached a high level of 90 percent and successfully proved the accuracy of the temperature-increase modal.The research conclusion explained the changing tendency of the isolator's natural frequency and isolation effect under different loading levels.Simultaneously,the vibration temperature-increase process provided references for nonlinear viscoelastic material damping tribute capability,thermal-damage and failure research during vibration.
Based on the dynamic energy dissipation characteristics of nonlinear viscoelastic material,this paper established a mathematical modal to analysis the shearing temperature-increase process of viscoelastic material under sinusoidal force,and designed a sine sweep experiment using the constrained damping vibration isolator.The acceleration changing history and the temperature-increase process were both recorded by experimental instruments.Comparing with the theoretical curve and the experimental curve,the similarity degree reached a high level of 90 percent and successfully proved the accuracy of the temperature-increase modal.The research conclusion explained the changing tendency of the isolator's natural frequency and isolation effect under different loading levels.Simultaneously,the vibration temperature-increase process provided references for nonlinear viscoelastic material damping tribute capability,thermal-damage and failure research during vibration.
引文
[1]杨挺青,罗文波,徐平.黏弹性理论与应用[M].北京:科学出版社,2004.9.
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[3]梁健,沈荣瀛.振动阻尼讲座——第二讲环境因素对阻尼材料性能的影响及分析[J].噪声与振动控制,1990,2:42—47.
[4]Ferry J D.Viscoelastic properties of polymer solutions[J].Journal of Research of the National Bureau ofStandards,1948,41:53—61.
[5]Sung Yi,Hilton H H.Dynamic responses of plateswith viscoelastic free layer damping treatment[J].Journal of Vibration and Acoustics,1996,118:362—367.
[6]吴波,郭安薪.粘弹性阻尼器的性能研究[J].地震工程与工程振动,1998,18(2):108—116.
[7]Wilke P S,Decker T A,Hale L C.Highly-dampedexactly-constrained mounting of an X-ray telescope[J].Proc.SPIE,1995,2445:2—13.
[8]Silva L A,Eric M Austin,Inman D J.Time-varyingcontroller for temperature-dependent viscoelasticity[J].Journal of Vibration and Acoustics,2005,127:215—222.
[9]Luciano Afonso da Silva.Internal variable andtemperature modeling behavior of viscoelasticstructures—A control analysis[D].L.A.:VirginiaTech.,2003.
[10]Jeyaraj P,Ganesan N.Vibration and acoustic responseof an isotropic plate in a thermal environment[J].Journal of Vibration and Acoustics.2008,130:3—6.
[11]Allen J Bronowicki.Constrained multi-layer damping:A semi-analytic solution[A].48th AIAA/ASME/ASCE/AHS/ASC Structures,Structural Dynamics,and Materials Conference[C],2007:23—26.
[12]Farhan Gandhi.Constrained-layer damping withgradient polymers for effectiveness over broadtemperature ranges[J].AIAA Journal,2007,45(8):1885—1 893.
[13]Allen J Bronowicki.Vibration isolator for large spacetelescopes[J].Journal of Spacecraft and Rockets,2006,43(1):45—53.
[14]Min Hao,Mohan D Rao.Optimum design ofmultiple-constraint-layered systems for vibrationcontrol[J].AIAA Journal,2004,42(12):2 448—2461.
[15]Farhan Gandhi.Influence of nonlinear viscoelasticmaterial characterization on performance ofconstrained layer damping treatment[J].AIAAJournal,2001,39(5):924—931.
[16]杨挺青.非线性粘弹体在周期应变条件下的应力与能耗[J].力学学报,1985,17(6):507—513.
[2]高东,唐治安,李朝旭.粘弹阻尼减振技术的工程应用[J].机械电子工程,2001,94(6):39—42.
[3]梁健,沈荣瀛.振动阻尼讲座——第二讲环境因素对阻尼材料性能的影响及分析[J].噪声与振动控制,1990,2:42—47.
[4]Ferry J D.Viscoelastic properties of polymer solutions[J].Journal of Research of the National Bureau ofStandards,1948,41:53—61.
[5]Sung Yi,Hilton H H.Dynamic responses of plateswith viscoelastic free layer damping treatment[J].Journal of Vibration and Acoustics,1996,118:362—367.
[6]吴波,郭安薪.粘弹性阻尼器的性能研究[J].地震工程与工程振动,1998,18(2):108—116.
[7]Wilke P S,Decker T A,Hale L C.Highly-dampedexactly-constrained mounting of an X-ray telescope[J].Proc.SPIE,1995,2445:2—13.
[8]Silva L A,Eric M Austin,Inman D J.Time-varyingcontroller for temperature-dependent viscoelasticity[J].Journal of Vibration and Acoustics,2005,127:215—222.
[9]Luciano Afonso da Silva.Internal variable andtemperature modeling behavior of viscoelasticstructures—A control analysis[D].L.A.:VirginiaTech.,2003.
[10]Jeyaraj P,Ganesan N.Vibration and acoustic responseof an isotropic plate in a thermal environment[J].Journal of Vibration and Acoustics.2008,130:3—6.
[11]Allen J Bronowicki.Constrained multi-layer damping:A semi-analytic solution[A].48th AIAA/ASME/ASCE/AHS/ASC Structures,Structural Dynamics,and Materials Conference[C],2007:23—26.
[12]Farhan Gandhi.Constrained-layer damping withgradient polymers for effectiveness over broadtemperature ranges[J].AIAA Journal,2007,45(8):1885—1 893.
[13]Allen J Bronowicki.Vibration isolator for large spacetelescopes[J].Journal of Spacecraft and Rockets,2006,43(1):45—53.
[14]Min Hao,Mohan D Rao.Optimum design ofmultiple-constraint-layered systems for vibrationcontrol[J].AIAA Journal,2004,42(12):2 448—2461.
[15]Farhan Gandhi.Influence of nonlinear viscoelasticmaterial characterization on performance ofconstrained layer damping treatment[J].AIAAJournal,2001,39(5):924—931.
[16]杨挺青.非线性粘弹体在周期应变条件下的应力与能耗[J].力学学报,1985,17(6):507—513.
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