材料期刊网

基于有限元分析软件 ABAQUS,对 SiCp/Al 复合材料的三维铣削过程进行有限元模拟,基于正交试验得到了三向铣削力的模拟结果,再对模拟得到的铣削力进行多元线性回归分析得到了铣削力的多元回归方程,将通过回归方程计算得到的铣削力与试验得到的进行对比,论证了SiCp/Al 复合材料铣削有限元模拟的可行性；分析了主轴转速、进给量、轴向切深对铣削合力的影响程度及影响趋势。结果表明：对铣削力影响程度从大到小依次为进给量、轴向切深、主轴转速；铣削合力随着进给量和轴向切深的增大而增大,随着主轴转速的增大而减小；通过回归方程计算得到的三向铣削力与试验值的误差都在10％范围内,说明利用有限元软件进行铣削模拟是可行的。

Based on finite element analysis software ABAQUS,a three-dimensional simulation model of high-speed milling of SiCp/Al composite was built.Based on orthogonal experiment,the simulation results of cutting forces in three directions were obtained.Multiple linear regression equations of milling forces were obtained by multiple linear regression.The feasibility of finite element simulation for SiCp/Al composite milling was demonstrated by comparing the calculated values of milling forces obtained by the regression equation with the experimental ones.The influence degree and tendency of spindle speed,feed and cutting depth in axial direction on cutting forces were analyzed.The results show that the parameters affecting cutting forces arranged in descending order were feed,cutting depth in axial direcion and spindle rate.Cutting force increased with the increase of feed and cutting depth in axial,while decreased with the increase of spindle rotation rate.Calculated cutting forces obtained by regression equation and experimental ones were consistent with the error in the range of 10%,indicating that finite element simulation for milling is feasible.