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。
Abstract
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, is developed, based on the analysis about 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 is deduced and calculated, by applying the method of substructure mobility analysis. And considering the modal density of modal solution, an estimation method for the coupling loss factor between the gear shaft and the plate which are connected by rolling bearing is studied, in accordance with the principle of Statistical Energy Analysis (SEA). The results of SEA and modal solution appear a good uniformity. A further investigation is made to reveal the characteristics of vibration energy transmitted through the rolling bearing in gearboxes, to provide a useful theoretical guide for 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
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Key words
gearbox /
rolling bearing /
statistical energy analysis(SEA) /
vibration transmission
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张秀芳;霍 睿;周 振;张 磊.
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[J]. 振动与冲击, 2013, 32(9): 63-67
ZHANG Xiu- fang;HUO Rui;ZHOU Zhen;ZHANG Lei.
Research on the power flow of the gear shaft~plate coupled structuresupported by rolling bearing[J]. Journal of Vibration and Shock, 2013, 32(9): 63-67
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脚注
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