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囊式混合介质隔振器的动力学特性试验
引用本文:张树桢,陈前,滕汉东.囊式混合介质隔振器的动力学特性试验[J].振动与冲击,2012,31(11):98-103.
作者姓名:张树桢  陈前  滕汉东
作者单位:南京航空航天大学,机械结构强度与振动国家重点实验室,南京 210016
基金项目:国家自然科学基金项目(10772080);江苏省普通高校研究生科研创新计划资助项目(CXZZ11_0200)
摘    要:为了摆脱气囊的气体泄漏问题,在气囊中填充弹性单元体和液体(混合介质)来替代气体。其带来的优点是消除了泄漏现象,可减少对监测和充气设备需求,从而大幅度降低了隔振系统成本。将充填混合介质的囊式隔振器在试验台架上进行正弦扫频激励的动力学特性试验,试验结果表明:囊式混合介质隔振器的振级落差随填充单元体数量的增加而升高;频响函数曲线表现出不同于气囊隔振器的刚度特性,其刚度特性受到所填充的弹性单元体和液体的力学特性影响,随内压的变化表现特性复杂。

关 键 词:隔振    气囊    波纹管单元体    液固混合介质  
收稿时间:2011-3-3
修稿时间:2011-6-19

Tests for dynamic properties of a gasbag SALiM vibration isolator
ZHANG Shu-zhen,CHEN Qian,TENG Han-dong.Tests for dynamic properties of a gasbag SALiM vibration isolator[J].Journal of Vibration and Shock,2012,31(11):98-103.
Authors:ZHANG Shu-zhen  CHEN Qian  TENG Han-dong
Affiliation:State Key Laboratory of Mechanics and Control of Mechanical Structures; Nanjing University of Aeronautics and Astronautics; Nanjing 210016, China
Abstract:Filling gasbag with elastic elements and liquid(solid and liquid mixture,SALiM) instead of air can avoid air leakage problems,and no longer requires position monitoring and maintaining equipments.As a result,it effectively reduces the cost of a vibration isolation system.Here,a liquid and corrugated-pipe elements formed SALiM medium of a vibration isolator.The performance of the vibration isolator was evaluated experimentally and numerically.The result indicated that the vibration isolation effect of the SALiM isolator increases with increase in the number of the corrugated-pipe elements;the stiffness of the gasbag filled with SALiM mixture increases with increase in the pressure of the mixture,but the curve of the frequency response function shows that the stiffness reveals complicated characteristics,that is caused by the mechanic properties of SALiM mixture associated with the gasbag.
Keywords:vibration isolation  gasbag  corrugated-pipe element  solid and liquid mixture
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