含有不同裂纹类型的弧齿锥齿轮副啮合特性分析  

Meshing Characteristics Analysis of Spiral Bevel Gear Pairs with Different Crack Types

作　　者：宋翰生 马辉[1] 刘子濛 黄文康 SONG Han-sheng;MA Hui;LIU Zi-meng;HUANG Wen-kang(School of Mechanical Engineering&Automation,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2024年第8期1096-1106,1114,共12页Journal of Northeastern University(Natural Science)

基　　金：国家科技重大专项(J2019-IV-0018-0086)。

摘　　要：在重载和交变载荷工况下,弧齿锥齿轮易产生齿根裂纹导致轮齿断裂,需明晰裂纹对啮合特性的影响机理,为故障诊断提供理论基础.利用ANSYS软件对弧齿锥齿轮齿副进行静态接触仿真分析.通过单元节点替换的方法设置了多种裂纹类型的故障模型,探讨了裂纹对弧齿锥齿轮副啮合特性的影响.研究结果表明:当轮齿接触椭圆移动到轮齿裂纹区域,啮合刚度随着裂纹的严重程度增加而逐渐下降,平面裂纹工况、空间裂纹工况和断齿工况的刚度最大下降量分别为27.58%,14.12%,32.82%.轮齿啮合的接触椭圆位置、裂纹位置以及深度会使齿面接触应力以及齿根弯曲应力产生不同的增减趋势.Under the working conditions of heavy load and alternating load,spiral bevel gears are prone to tooth root cracks,which lead to tooth fractures.It is necessary to clarify the influence mechanism of cracks on meshing characteristics and provide theoretical basis for fault diagnosis.The finite element model of bevel gear pairs is constructed,and the static contact simulation analysis is carried out by ANSYS software.The fault models of various crack types are set up by the method of unit node replacement,and the influence of cracks on the meshing characteristics of spiral bevel gear pairs is discussed.The results show that when the contact ellipse of gear teeth moves to the crack area of gear teeth,the meshing stiffness gradually decreases with the increase of the severity of the crack,and the maximum reduction of stiffness under the condition of plane crack,space crack and broken teeth is 27.58%,14.12%and 32.82%respectively.The contact ellipse position,crack position and depth of gear meshing will make the contact stress of tooth surface and the bending stress of tooth root have different increasing and decreasing trends.

关 键 词：弧齿锥齿轮 轮齿裂纹形式 故障参数 啮合刚度 接触特性 轮齿接触分析 

分 类 号：TH132.422[机械工程—机械制造及自动化]