波片波形对焊接金属波纹管刚度的影响  

Effects of Waveform on Welded Metal Bellows Stiffness

作　　者：谭金[1] 马咏梅[1] 王庆[2] 

机构地区：[1]四川大学制造科学与工程学院,四川成都610000 [2]四川日机密封件股份有限公司,四川成都610045

出　　处：《润滑与密封》2015年第4期40-44,共5页Lubrication Engineering

基　　金：四川省科技支撑计划项目(2014GZ0128)

摘　　要：焊接金属波纹管是密封件中重要部件,波纹管刚度对密封件的密封性能有显著影响。以2种S型波形DN70波纹管为研究对象,建立波纹管的单波有限元模型,确定适合的边界条件,分别研究波片波形直线段、圆弧段几何尺寸对其刚度的影响,通过优化分析获得与设计公式偏差较小的波形尺寸。研究结果表明,波片波形尺寸对波纹管的刚度有明显影响,内圆斜边波形的波片刚度比内圆直边波形的刚度大,直线段波形对刚度的影响比圆弧段波形大。Welded metal bellows are the important parts of seal components, whose stiffness has a significant effect on sealing performance. Taking two kinds of DN70 bellows with S-type waveform as the research objects, the finite element model of single-wave bellows was set up, the suitable constraints were established, and the influences of the waveform geo- metrical sizes of the wave plate with line segments and circular arc segments on the stiffness were studied. The waveform size which has a smaller deviation with the design formula was got by the optimization analysis. The results show that the waveform size has aobvious effect on the stiffness of bellows ; The wave plate with inner circle bevel edge waveform has larger stiffness than that with inner circle straight edge waveform; The influence of straight segment waveform on the stiffness is larger than the arc segment waveform.

关 键 词：焊接金属波纹管 波形 刚度 密封件 

分 类 号：TB42[一般工业技术]