某柴油机发电机组隔振系统设计

Design of Vibration Isolation System for Diesel Genset

为优化设计某柴油机发电机组的隔振系统,首先构建该发电机组整体三维模型,然后分别通过动力学及有限元方法计算该隔振系统下机组的固有频率及振型;并在此基础上提取机组在各扰动激励下的振动响应特性;并对船舶航行过程中该隔振系统下机组的稳定性进行校核;最后通过机组台架试验,对该发电机组进行振动测试,分析该型发电机组的振速烈度级,评价该隔振系统实际隔振效果。

To realize optimum design of certain diesel genet~ isolation system, the 3D model of the genset was constructed first, and the natural frequency and vibration mode of the genset matching with this vibra- tion isolation system was calculated using the dynamics formula and finite element method respectively. Based on which, the vibration response characteristics of the generator set was extracted under different disturbance excitation. And the stability of the unit with the vibration isolation system was checked in the navigation condition. Finally, the vibration intensity level was confirmed by vibration bench test to evalu- ate the actual effect of the vibration isolation system.