摘要
运用ABAQUS/Explicit对颗粒增强铝基复合材料(SiCp/Al)进行0.5mm微孔钻削有限元仿真,通过研究网格尺寸和质量放大系数对钻削力结果的影响,优化微孔钻削仿真的参数,模拟主轴转速和进给速度对钻削力的变化规律、钻屑的形成及其形貌的作用规律。基于仿真结果设置主轴转速和进给速度,进行SiCp/Al复合材料微孔钻削试验。结果表明:选取合适的单元尺寸和质量放大系数可明显提高仿真精度;低主轴转速、大切削厚度会产生较大的碎片状钻屑,使排屑困难;仿真时采用材料均质化模型会带来一定的误差。
This study usesABAQUS/Explicit to study the finite element simulation of 0.5mm micro-hole drilling of particle-reinforced aluminum matrix composites(SiCp/Al).By studying the influence of grid size and mass amplification factor on the drilling force results and optimizing the parameters of micro-hole drilling simulation,this study simulates the variation of the spindle speed and feed rate on the drilling force and the law of the formation and shape of the drill cuttings.The spindle speed and feed rate were set based on the simulation results and drilling test was performed on the SiCp/Al.The results of this study show that selecting the appropriate unit size and mass amplification factor can significantly improve the simulation accuracy.Meanwhile,low spindle speed and large cutting thickness will produce large debris-like chips and cause chips removal difficulties and the material homogenization model will bring some errors in the simulation.
作者
白小云
孙素杰
魏秋艳
董志国
BAI Xiao-yun;SUN Su-jie;WEI Qiu-yan;DONG Zhi-guo(College of Mechanical and Vehicle Engineering,Taiyuan University of Techology,Shanxi Taiyuan 030024,China;Shanxi Provincial Key Laboratory of Precision Machining,Shanxi Taiyuan 030024,China)
出处
《机械设计与制造》
北大核心
2023年第5期134-137,共4页
Machinery Design & Manufacture
基金
山西省国际合作项目(201803D421045)。
