基于行驶仿真试验的齿轮疲劳寿命分析  

Fatigue Life Analysis of Gears Based on Ride Simulation Test

作　　者：张建成[1] 张庆霞 毛智勇[1] 

机构地区：[1]北京联合大学,北京100020 [2]北京特种机电研究所,北京100012

出　　处：《中国机械工程》2014年第8期1001-1006,共6页China Mechanical Engineering

基　　金：国家重大科技成果转化项目(财建(2011)329);北京联合大学人才强校计划人才资助项目(BPHR2011A5)

摘　　要：利用虚拟样机模型,通过行驶仿真试验获取了传动箱齿轮在各任务剖面的动态载荷谱。通过三维接触应力分析,得到了齿轮危险点的应力-时间历程,用插值法对恒转矩下获得的仿真载荷进行了修正,分析了载荷的分布规律,采用权系数法确定了多工况的二维联合概率分布函数,建立了传动箱齿轮在全寿命里程的疲劳设计谱。采用二维概率Miner准则计算了零件的疲劳寿命,并分析了相关参数对齿轮寿命的影响。Based on virtual prototype dynamic model, wheel box gears＇ load spectrum of different work sections was obtained through ride simulation test. Through three-dimensional contact stress a- nalysis, stress-time-course of gear＇s dangerous section was acquired, interpolation method was applied to modify the simulation load under constant torque. The distribution regularity of random load was analyzed and two dimensional joint probability density function under multiple working conditions was synthesized with weight coefficient method. Thus full-life kilometer fatigue design load spectrum of wheel box gears was established. Two dimensional probability Miner rule was adopted to calculate fa- tigue life of the parts. Some relevant parameters which influenced gear life were analyzed,a new meth- od of fatigue life analysis on wheel box gears was provided.

关 键 词：虚拟样机 载荷谱编制 齿轮 疲劳寿命 

分 类 号：TH17[机械工程—机械制造及自动化]