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文章对一种微幅隔振器的阻尼力机理进行了研究,给出了牛顿流体阻尼力理论计算公式,提出了有效直径的概念。利用Fluent软件对该种微幅隔振器进行了仿真,结果表明:阻尼力与等效活塞运动时间无关,且局部阻尼力相比于沿程阻尼力过小,可以忽略,修正并验证了阻尼力理论计算公式。通过阻尼腔的结构尺寸及修正系数确定了有效直径的数值,可为微幅隔振器的设计提供理论指导。
In this paper, the damping force mechanism of a small amplitude vibration isolator is studied. The theoretical formula of Newtonian fluid damping force is given and the concept of effective diameter is proposed. The Fluent software was used to simulate the vibration isolator. The results show that the damping force has nothing to do with the equivalent piston movement time, and the local damping force is negligible compared to the damping force along the path. The damping Force theory calculation formula. The numerical value of the effective diameter is determined by the size of the damping cavity and the correction factor, which can provide theoretical guidance for the design of the micro vibration isolator.