论文部分内容阅读
阻尼涂覆层目前广泛地应用于船舶机舱和生活住舱中的机械壳体、铺板、舱壁的减振。同样,对阻尼层的有效性研究也直接在振源设备的构件上进行着。阻尼层的隔振效果以采用阻尼介质之前和之后的振动速度均方值<(?)~2>之差来定义,并以分贝数记之,即ВП=101g<(?)~2>/<(?)_D~2>,而且针对所选定的频率范围进行平均,同时也按构造进行平均。机械的机体、机体的支座,这些都是复杂的非均质的空间结构。对其中的振动过程的研究需借助专用的数学模型来进行。采用阻尼
Damping coatings are widely used today for vibration damping of machinery housings, decking, bulkheads in marine and domestic cabins. Similarly, the effectiveness of the damping layer is also studied directly on the components of the vibration source. The damping effect of the damping layer is defined as the difference between the mean square values of the vibration velocities before and after damping medium <(?) ~ 2> and is expressed in decibels, that is, ВП = 101g <(?)? 2> <(?) _ D ~ 2> and averaged over the selected frequency range and also averaged by construction. Mechanical body, the body’s bearings, these are complex heterogeneous spatial structure. The vibration of the process of which need to use a dedicated mathematical model to carry out. With damping