论文部分内容阅读
试验表明,海绵乳胶、玻璃纤维和某些橡胶等材料隔振系统,其高频隔振性能普遍降低.为了模拟这类材料隔振系统的高频传递特性,文章提出了刚度随频率平方增加的变刚度系统,如图一所示.图一中弹簧刚度由两部分组成,第一部分为常数k_0,第二部分mω~2与振动圆频率的平方成正比,比例系数为m.图中其它参数的意义与普通简单隔振系统中的相同.适当选择m值,变刚度系统能在一定频率范围内较好地模拟上述材料隔振系统的高频传递特性,理论计算与
Experiments show that the high-frequency vibration isolation performance of the vibration isolation system of sponge latex, fiberglass and certain rubber materials is generally reduced.In order to simulate the high-frequency transmission characteristics of the vibration isolation system of such materials, the article proposes that the stiffness increases with the square of the frequency Variable stiffness system, shown in Figure 1. Figure 1 spring stiffness consists of two parts, the first part of the constant k_0, the second part of mω ~ 2 and the square of the vibration frequency is proportional to the square, the proportional coefficient of m. Other parameters Has the same meaning as ordinary simple vibration isolation system.With proper choice of m value and variable stiffness system, the high frequency transmission characteristics of the above vibration isolation system can be well simulated in a certain frequency range. The theoretical calculation and