齿轮箱固有特性数值模拟和试验研究

摘要

Gear system consists of transmission system and structural system. The dynamic performances of structural system, i.e. gear box, play an important role in the dynamic characteristics of gear system. The gear box is the main source of gear system noise. The dynamic model of box in a single stage reducer is established by FEM in this paper. The normal characteristics of the box are investigated by I-DEAS software and experimental modal analysis. The results show the dynamic performance of the box and lay foundation for calculation of dynamic characteristics of gear system.%齿轮系统由传动系统和结构系统两 部分组成，其中结构系统的动态性能对整个系统的影响最大。本文采用有限元方法，建立了 实际单级齿轮减速器的齿轮箱有限元动力学模型，在工作站上用I-DEAS软件研究了齿轮箱 的固有特性，并用试验模态分析方法验证了固有频率的数值模拟结果。所得结果既反映了箱 体的动力学性能，又为齿轮系统的动态特性分析奠定了基础。