CAJ | 학술논문

以含有惯容器的多层隔振系统为研究对象，建立了多层隔振系统的动力学模型。研究了惯容器对系统固有频率的影响，分析了惯容器的位置变化对多层隔振系统的影响，推导了多层隔振系统的振动传递率公式。研究结果表明：不管惯容器安装在上层还是下层，都会减小多层隔振系统的固有频率，惯容器对高阶固有频率的影响较大；在上层安装惯容器对系统的固有频率影响较大，会减小相邻固有频率的间隔；当惯容器一端接地一端接中间质量时，相当于增加了中间质量的参振质量；不接地的惯容器会减小隔振系统高频振动传递率的衰减。研究结果有利于惯容器在舰船上的应用。
이함유관용기적다층격진계통위연구대상，건립료다층격진계통적동역학모형。연구료관용기대계통고유빈솔적영향，분석료관용기적위치변화대다층격진계통적영향，추도료다층격진계통적진동전체솔공식。연구결과표명：불관관용기안장재상층환시하층，도회감소다층격진계통적고유빈솔，관용기대고계고유빈솔적영향교대；재상층안장관용기대계통적고유빈솔영향교대，회감소상린고유빈솔적간격；당관용기일단접지일단접중간질량시，상당우증가료중간질량적삼진질량；불접지적관용기회감소격진계통고빈진동전체솔적쇠감。연구결과유리우관용기재함선상적응용。
Based on a multi-staged vibration isolation system with inerter , a dynamic model of multi-staged vibra-tion isolation system is established and the influence of inerter′s position on the multi-staged vibration isolation system is studied .Transmissibility formula of two-stage vibration isolation system is brought forward .The test re-sults show that with the installation of inter device either in the upper layer or the lower layer , the natural fre-quency in vertical direction decreases , and so does the space between the two adjacent natural frequencies . When inerter device is installed in the upper layer , it has greater influence on vibration isolation system .When inerter device is installed in the lower layer , it could be considered to increase intermediate mass which would improve vibration isolation performance of the two-stage vibration isolation system .In other words, inerter device installed in the lower layer could maintain the vibration isolation performance of multi -stage vibration isolation system with less intermediate mass .However , the ungrounded inerter will decrease the high-frequency attenua-tion .Research results in this paper would be conducive to the application of inerter on multi -stage vibration isola-tion both in ships and warships .