中文摘要：

基于刀具和工件材料特性、切屑变形模型、氧化试验和摩擦磨损等试验获得的相关数据,采用更新拉格朗日算法和局部网格重划分技术,建立更符合实际情况的切削有限元模型。借助有限元计算软件模拟出Al2O3/ZrB2/ZrO2陶瓷刀具切削45钢的过程中温度场变化规律,得到切削加工的合理用量（切削速度为200～280m·min–1,切削深度为0.1～0.3mm）。通过相关切削试验对模拟进行验证。结果表明,模拟结果与试验数据基本吻合,在高速下吻合更好。此类数值模拟方法可以为研制新的陶瓷刀具材料及切削用量的选择提供相关理论依据,降低试验成本。

英文摘要：

Based on the tool and workpiece materials,chip deformation model,and the relevant data obtained from oxidation test and friction-wear test,the updated Lagrangian algorithm and the local mesh re-dividing technique are used to build a cutting finite element model more conforming to the actual situation. The change regularity of temperature field in metal cutting process is simulated by finite element software,and the optimum quantities （cutting speed is 200～280 m·min–1,cutting depth is 0.1～0.3 mm） are obtained from cutting 45 steel with the Al2O3/ZrB2/ZrO2 ceramic tool. Relevant cutting test is carried out to verify the precision of simulation. Results show that the simulation results basically agree with the test data,which is even better at high speed. This kind of numerical simulation can provide a theoretical basis for future development of new ceramic tool materials and choice of cutting quantities,thus reducing the test cost.