齿轮啮合周期内摩擦载荷变化有限元仿真分析  

Finite Element Simulation Analysis of Friction Load Varition During Gear Meshing Cycle

作　　者：闫晓丽 崔钺[1,2] 孟丽丽 YAN Xiao-lil;CUI Yue;MENG Li-li(Key Laboratory of Digital Design and Process Simulation for Intelligent Equipment in Hebei Province,Tangshan Hebei 063000,China;Tangshan University,Hebei Tangshan Hebei 063000,China;School of Mechanical Engineering,North China University of Technology,Tangshan Hebei 063000,China)

机构地区：[1]河北省智能装备数字化设计及过程仿真重点实验室,河北唐山063000 [2]唐山学院,河北唐山063000 [3]华北理工大学机械工程学院,河北唐山063000

出　　处：《计算机仿真》2024年第4期512-516,共5页Computer Simulation

基　　金：河北省教育厅科学技术研究项目资助(QN2022198)。

摘　　要：为能更好地分析齿轮啮合周期中摩擦载荷变化,建立齿轮分析模型,研究齿轮间传动关系,区分齿轮输入端和输出端的阻力扭矩,搭建有限元分析模型。为保证模型的精确度,在前期预处理阶段针对齿轮不同位置的实际情况构建对应网格,区分不同位置的网格密度,根据齿轮的轮动比和角位移得出旋转自由度。在齿轮啮合过程中,搭建动力学分析模型,研究摩擦载荷的变化情况,考虑齿轮啮合频率,根据长度线条确定摩擦因数,利用摩擦函数明确齿轮间的最大接触应力和弯曲应力,完成摩擦载荷变化分析。经仿真验证可知,所研究方法能准确描述齿轮啮合周期内摩擦载荷的实时变化。In order to better analyze the changes of friction load within the gear meshing cycle,this paper designed a gear analysis model to study the transmission relationship between gears and distinguish the resistance torque at the input and output ends of a gear.Firstly,a finite element analysis model was built.In order to ensure the accuracy of the model,in the pre-processing stage,corresponding meshes were constructed according to the actual situation of a gear at different positions.Meanwhile,the mesh density at different positions was distinguished.Based on the gear rotation ratio and angular displacement,the rotational degree of freedom was obtained.During the gear meshing process,a dynamic analysis model was constructed to study the changes in friction load.Afer considering the gear meshing frequency,we determined the friction factor by the length line.Finally,we defined the maximum contact stress and bending stress between gears by the friction function,thus completing the analysis of changes in friction load.The simulation results prove that the method can accurately describe the real-time changes of friction load within the gear meshing cycle.

关 键 词：齿轮转动 啮合周期 摩擦载荷 主动轴 齿轮接触面 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]