从工程实际应用出发，为使行星减速器既能稳定运行又可以达到良好的隔振效果，以某功率分流行星隔振式双层箱体减速器为研究对象，在MASTA软件中采用子结构耦合法将箱体结构与传动系统模型进行耦合，在考虑箱体动态特性情况下，分析功率分流式行星减速器传递误差基频率特性与传动系统动态啮合力，并结合工程实际求出了主要激励频率以及凝聚节点的动态啮合力，以此作为隔振优化和振动响应计算的条件，以振级落差和插入损失作为隔振效果评价指标，研究了隔振支撑刚度变化对隔振指标的影响，通过分析不同支撑刚度下Ⅱ级动态啮合力的变化规律，对隔振效果、动态啮合力与支撑刚度的关系进行了综合评定，优化确定了隔振式双层箱体的稳定隔振支撑刚度区域，在获得较好隔振效果同时保证了行星减速器稳定运行。

In order to ensure the planetary reducer operates stably and a good vibration isolation effect can be achieved，a power split planetary reducer is chosen as the research object in this paper,and the relationship between the transmission error of the power split planetary reducer,the number of meshing gear pairs and the change of time variable stiffness is analyzed in the case of the dynamic characteristics of box,and dynamic meshing force is computed base on transmission error in the MASTA.The dynamic excitation of different gear meshing is calculated and dynamic force of bearing is solved and used for the condition of vibration isolation design and vibration response calculation.The vibration level drop and the insertion loss are used as the evaluation indexes of vibration isolation effect. The influence of the stiffness change of the vibration isolation support on the vibration isolation index is studied.By analyzing the change rule of dynamic meshing force of second stage transmission system under different support stiffness and the relationship between the vibration isolation effect,the dynamic meshing force and the support stiffness is analyzed.In the end,the stiffness isolation area of vibration isolation box is optimized,and a better isolation effect is achieved while the stable operation of planetary reducer is ensured.

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国家自然科学基金(51676131,51176129)；上海市科学技术委员会项目资助(13DZ2260900)