采煤机行走轮疲劳寿命仿真研究

The Research on Fatigue Lifetime Simulation of the Travel Wheel of the Coalcutter

通过对采煤机的行走轮进行三维建模和对材料的特性分析,应用有限元软件ANSYS模拟某型号采煤机行走部行走轮在正常工作环境和单轮受力工作环境两种工况载荷下的受力情况,进行有限元分析找出应力最大处,并分别对两种工况下材料的的疲劳寿命进行仿真分析。仿真结果表明:采煤机行走轮运行同步性为行走轮疲劳寿命的主要影响因素,优化键槽的形状和位置,可以改善轮齿的疲劳寿命,同时可根据计算的S-N曲线进行加载,从而缩短疲劳寿命的时间,为实际工作和实验研究提供有价值的理论依据。

Through the characteristics analysis of the material and the 3D modeling of the coalcutter travel wheel,by using finite element analysis software ANSYS,the stress situation of a certain type of coalcutter travel wheel under two working loads conditions of normal working environment and single wheel force working environment was simulated.Carring on the finite element analysis can find out the largest stress point,and respectively conduct the simulation analysis of the fatigue life of material under the two working conditions.The simulation results show that the running synchronism of the coalcutter travel wheel is the main influence factors for the fatigue life of the wheel,and optimizing the shape and position of the keyway can improve the fatigue life of gear tooth,and at the same time loading according to the calculated s-n curve can shorten the time of fatigue life,and provide valuable theoretical basis for experimental studies and the practical work.