基于ANSYS的低频弹簧橡胶减振器结构设计  

Compound absorber structure design for low frequencies vibration isolation

作　　者：马咏梅[1] 谢梅英[1] 

机构地区：[1]四川大学制造学院,成都610065

出　　处：《机械设计与制造》2008年第9期16-18,共3页Machinery Design & Manufacture

摘　　要：在某型号的电子设备的减振器设计中,综合考虑了振动、冲击两种主要的力学环境,以减振器刚度为设计变量,根据振动、冲击环境设计要求确定了约束条件,在ANSYS中建立了减振器的力学模型,分析确定了减振器的三个方向的弹簧常数。由于该电子设备需要从20Hz处的超低频开始减振,目前国内小型减振器的减振都不能达到这样的效果,因此该设计也是一种探讨研究。众所周知,弹簧减振器具有很好的低频特性,但是它没有适当的阻尼不能很好地抑制共振峰;而橡胶减振器有大阻尼特性,不足之处是它的低频减振效果不尽人意。为了兼顾弹簧的低频特性和橡胶的阻尼特性,从弹簧和橡胶如何组合成低频减振器进行了理论研究,在设计过程以实验进行验证、指导,可为该类减振器的设计提供借鉴。The compound absorber of some type of electronic device is designed. Two main dynamic circumstances ：vibration and strike are considered. The design variable is rigidity of vibration absorber,and the constraint condition is defined based on the requirement of vibration and strike designing circumstances. A mathematic model of vibration absorber system is set up in ANSYS,and spring constant of vibration absorber in 3 directions was defined after analyzing. A t the present time ,small vibration absorber can＇t absorb vibration from 20 Hz,but this design require vibration absorber to reduce vibration from 20 Hz,so this paper is a kind of discuss and study in super low frequencies absorbing. As far as we know, spring vibration absorber is effective at low frequencies ,but it can not damp formant of vibration; on the other hand,rubber vibration absorber can damp vibration,but it＇s not very well at low frequencies. In order to give attention to low frequencies characteristic of spring and damp characteristic of rubber,it studies theory on how to get super low frequencies vibration absorber by combining spring and rubber,aided with experiment in the process of design,so the paper can afford help to the similar design.

关 键 词：复合减振器 超低频 减振器结构设计 

分 类 号：TH12[机械工程—机械设计及理论] TB123[理学—工程力学]