为进一步降低气囊隔振器垂向刚度，提高中高频隔振效果，同时适当减小横向刚度以衰减沿此方向的振动传递，设计提出了一种复合结构气囊隔振器(CSAS)。它在原有气囊下端串联硬弹性层形成叠层结构;开展了静态和动态试验，并分别用多项式拟合法和椭圆法计算静刚度和动刚度。试验结果表明:串联硬弹性层后气囊气压与承载之间的线性关系并没有改变；垂向动、静刚度和固有频率均小幅下降，横向动、静刚度则大幅下降。
Abstract
Here，to further reduce vertical stiffness of air spring, improve the effect of medium and high frequency vibration isolation, and appropriately reduce lateral stiffness to attenuate vibration transmission in this direction, a compound structure air spring (CSAS) was designed and proposed. A hard elastic layer was connected in series at the lower end of the original air spring to form a laminated structure. Static and dynamic tests of the isolator were conducted. Furthermore, static and dynamic stiffnesses of the isolator were calculated using the polynomial fitting method and the ellipse method, respectively. The test results showed that the linear relationship between air spring pressure and load does not change after the hard elastic layer is connected in series to the bag; the isolator’s vertical dynamic stiffness and static one as well as its natural frequency decrease slightly, while its lateral dynamic stiffness and static one drop largely.
关键词
气囊隔振器 /
复合结构 /
承载 /
刚度
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Key words
air spring; compound structure /
load-bearing /
stiffness
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