点蚀缺陷对面齿轮接触应力影响的有限元分析  

FINITE ELEMENT ANALYSIS ON THE INFLUENCE OF PITTING DEFECT ON THE CONTACT STRESS OF FACE GEAR

作　　者：黄臻荣 张娟 HUANG ZhenRong;ZHANG Juan(AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,China;AECC Key Laboratory of Aero-Engine Vibration Technology,Zhuzhou 412002,China)

机构地区：[1]中国航空发动机集团湖南动力机械研究所,株洲412002 [2]中国航空发动机集团航空发动机振动技术重点实验室,株洲412002

出　　处：《机械强度》2023年第2期494-498,共5页Journal of Mechanical Strength

摘　　要：以直升机传动系统面齿轮作为研究对象,采用UG和Catia软件建立含球型缺陷的面齿轮实体模型,采用有限元加载接触分析(Loading Tooth Contact Analysis,LTCA)方法,得到了缺陷在齿面不同位置时齿面的接触应力、最大接触应力点的位置以及最大接触应力值在不同位置的分布规律。结果表明,点蚀缺陷的出现可使齿面最大接触应力增加约21%,缺陷靠近接触轨迹线内侧和齿顶时,缺陷附近的最大接触应力大于其他位置,最大接触应力点出现在坑洞的中部或上部且随接触轨迹线左右分布,缺陷附近的最大接触应力随缺陷半径增加而逐渐变大,缺陷深度对接触应力的影响较小。In order to study the influence of pitting defect on the contact stress of face gear,a face gear of helicopter transmission system was taken as the research object,the defect shape was assumed to be spherical and the solid model was built by UG and Catia software.Using the finite element loading tooth contact analysis method(LTCA),the contact stress distribution and variations of maximum contact stress value and its position are obtained when the defect is in different position on the tooth surface.The results show that the introduction of pitting defect can increase the maximum contact stress of tooth surface by 21%.When the defect is close to the contact trace line and tooth tip,the maximum contact stress is greater than that of other positions.The maximum contact stress occurs near the middle or upper part of the defect,its position is on the right of the defect while the defect is outside the contact trace line,and it is the opposite when the defect is inside the contact trace line.The maximum contact stress near the defect increases with the increase of defect radius gradually.The influence of defect depth on contact stress is small.

关 键 词：面齿轮 接触应力 缺陷 有限元 

分 类 号：TH132.429[机械工程—机械制造及自动化]