基于有限元方法的齿轮箱动态响应分析

Analysis of Dynamic Response of Gearbox Based on FEM

运用结构有限元法对某齿轮箱进行数值仿真分析。建立齿轮箱三维有限元模型,基于分块Lancozs完成齿轮箱模态分析,提取其固有频率及振型,分析齿轮啮合动态激励,完成齿轮箱频率响应分析,得到了振动速度、振动位移及振动加速度,分析了动态响应规律,这为后期齿轮箱结构优化及降噪提供理论依据。

In this paper, the numerical simulation of gearbox is carried out by FEM, and the three-dimensional finite element model for the gearbox is constructed, and then the gearbox modal analysis is also completed by the Lancozs method, its natural frequency and principal modal are obtained.In order to analyze the dynamic response, modal frequency response of gearbox is established, its vibration velocity, displacement and vibration acceleration are calculated.It could provide a theoretical basis for the post-structural optimization and noise reduction of gearbox.