滚动轴承支承的齿轮传动轴-板耦合结构功率流传递特性研究  

Transfer characteristics of power flow of the shaft-plate coupled structure in gear driving system supported by rolling bearings

作　　者：张秀芳[1,2] 霍睿[1,2] 周振[1,2] 张磊[1,2] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]山东大学高效洁净机械制造教育部重点实验室

出　　处：《振动与冲击》2013年第9期63-67,共5页Journal of Vibration and Shock

摘　　要：针对影响机械设备整机工作性能的齿轮箱系统动态特性,通过对齿轮箱系统振动噪声的产生机理及传递路径分析,建立轴系传动系统中典型组合结构—板-滚动轴承-齿轮轴-滚动轴承-板耦合系统的动力学模型,并应用子结构导纳法推导计算通过滚动轴承传递到箱板振动功率流的模态解。考虑到模态解的模态密集性,据统计能量分析原理,研究齿轮轴-滚动轴承-板耦合结构的耦合损耗因子的估算方法,统计能量分析与模态解的结果显示,吻合性较好。对振动能量通过滚动轴承传递的特性及影响因素进行研究分析,为齿轮箱系统减振降噪设计提供理论依据。In view of the effect of gearboxes' dynamic characteristics on the working performance of mechanical equipments, a dynamical model of the typical composite structure in shafts driving systems, i.e. plate-rolling-bearing-gear-shaft-rolling-bearing-plate coupled system, was developed, based on the analysis on the generation mechanism and transmission path of the structure-borne sound energy in gearbox systems. The modal solution of the vibration power flow transmitted to the plate through rolling bearing was deduced and calculated, by applying the method of substructure mobility analysis. Considering the modal density in modal solution, an estimation method for the coupling loss factor between gear shaft and plate which are connected by rolling bearings was studied, in accordance with the principle of SEA. The results of SEA and modal solution appear a good uniformity. A further investigation was made to reveal the characteristics of vibration energy transmitted through the rolling bearings in gearboxes, to provide a useful theoretical guide for designing gearboxes with lower noise and vibration.

关 键 词：齿轮箱 滚动轴承 统计能量分析 振动传递 

分 类 号：TB53[理学—物理]