平面磨削热源模型的仿真与比较研究  

Simulation and Comparison of Thermal Resource Models in Surface Grinding

作　　者：夏启龙[1] 周志雄[1] 黄向明[1] 杨钦文[1] 

机构地区：[1]湖南大学机械与运载工程学院,湖南长沙410082

出　　处：《计算机仿真》2010年第1期297-300,共4页Computer Simulation

基　　金：国家自然科学基金资助项目(50675063)

摘　　要：磨削温度场很难通过解析法求解,因此,利用有限元法对磨削温度场进行数值仿真已成为一种重要的方法。在平面磨削温度的仿真研究中,主要采用三角形热源模型进行分析。介绍一种新的平面磨削热源模型(抛物线热源模型),用离散方法研究了两种热源模型,并利用两种热源模型分别对平面磨削温度进行了有限元仿真。通过对淬硬轴承钢GC r15磨削试验,采用热电偶测量了一定磨削条件下接触区的温度。仿真结果与试验对比分析表明:抛物线热源模型比三角形模型热源模型仿真结果更符合实际磨削温度。Temperature fields in the grinding zone are difficult to be solved analytically,therefore the finite element method becomes an important solution way.Triangle thermal resource is one of the major forms for analyzing the temperature fields by simulation of surface grinding.In this paper,a new kind of thermal resource model,parabolic thermal resource is presented,two models are studied by analysis of variance.The two models are used in simulation of surface grinding.Based on the test of grinding GCr15 hardened bearing steel,the grinding temperature distribution under a certain condition in the contact zone is measured by using a thermocouple.Comparing with experiment,the simulation results indicate that parabolic thermal resource model is more reliable than triangle thermal resource model.

关 键 词：平面磨削 热源模型 有限元仿真 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]