卷筒纸折页机传动齿轮疲劳寿命预测  

Fatigue Life Prediction of Transmission Gear of Web Folding Machine

作　　者：林玉龙 白慧娟 姜涵 张天浩 恩溪弄 LIN Yu-long;BAI Hui-juan;JIANG Han;ZHANG Tian-hao;EN Xi-nong(School of Mechanical and Electrical Engineering,Beijing Institute of Graphic Communication,Beijing 102600,China;Beijing Key Laboratory of Digitalized Printing Equipment,Beijing Institute of Graphic Communication,Beijing 102600,China)

机构地区：[1]北京印刷学院机电工程学院,北京102600 [2]北京印刷学院数字化印刷装备北京市重点实验室,北京102600

出　　处：《印刷与数字媒体技术研究》2024年第1期99-106,共8页Printing and Digital Media Technology Study

基　　金：北京市教委科技项目(No.KM202110015005);北京印刷学院博士启动金项目(No.27170122001)。

摘　　要：以某型号卷筒纸折页机传动系统的传动齿轮为研究对象,采用ANSYS/LS-DYNA软件建立了一对齿轮副啮合的有限元动力学模型,选取小齿轮受拉侧某轮齿的齿根处为危险点,得到其弯曲应力-时间历程;利用基于功率密度的疲劳分析方法对小齿轮进行疲劳寿命预测,计算得到危险点的疲劳寿命为12123.5h。该方法同时考虑应力幅值和频率两个因素对疲劳的影响,与基于Miner损伤理论和名义应力法分析得到的疲劳寿命27974h相比,计算精度更高、更接近实际工作寿命(10800h)。该研究为折页机传动系统的疲劳寿命预测提供了更符合实际的分析方法。Taking the transmission gear of a certain type of web folding machine transmission system as the research object,the finite element dynamics model of a pair of gears meshing was established by ANSYS/LS-DYNA software,and a tooth root on the tensile side of the pinion was selected as the danger point to obtain its bending stress-time history.The fatigue life of the pinion was predicted by the fatigue analysis method based on power density,and the fatigue life of the dangerous point was calculated to be 12123.5h.The power density method considered the effects of stress amplitude and frequency on fatigue at the same time,comparing to the fatigue life of 27974h obtained by analysis based on Miner damage theory and nominal stress method,the calculation result was more accurate and closer to the actual working life(10800h).This study provided a more realistic analysis method for the fatigue life prediction of the folding machine’s transmission system.

关 键 词：折页机 传动齿轮 功率密度 疲劳寿命 

分 类 号：TS803.6[轻工技术与工程] TP391.9[自动化与计算机技术—计算机应用技术]