SiC_p/Al复合材料铣削残余应力的有限元分析  

Finite Element Analysis of Residual Stress during Milling of SiC_p/Al Composites

作　　者：张鹏飞[1] 崔超[1] 张德光[1] 周丽[1] Zhang Pengfei Cui Chao Zhang Deguang Zhou Li

机构地区：[1]沈阳理工大学

出　　处：《工具技术》2017年第6期52-56,共5页Tool Engineering

基　　金：国家自然科学基金(51175353)

摘　　要：SiC_p/Al复合材料属于典型难加工材料,大量Si C颗粒离散分布其中,导致在铣削加工高体积分数SiC_p/Al复合材料时,加工表面容易出现应力分布不均现象,严重影响材料的稳定性。为了研究SiC_p/Al复合材料加工表面残余应力,通过ABAQUS有限元分析软件建立了SiC_p/Al复合材料三维铣削有限元模型,并分析了切削工艺参数对残余应力的影响。结果表明:切削速度对残余应力变化影响较小,每齿进给量对残余应力变化影响较大,所得结果与经验计算值吻合较好。SiCp/A1 composite is a kind of typical materials difficult to process and a large amount of SiC particles dis- tributed discretely,which lead to the uneven stress distribution in the machined surface when milling high volume fraction SiCp/A1 composites. Therefore, the stability of the material was degraded severely. In this paper,in order to study of the resid- ual stress of SiCp/AI composites machined surface,three dimensional milling model of SiCp/A1 composite was established by using ABAQUS finite element software ,and the influence of cutting parameters on residual stress was investigated. The results show that the cutting speed has a little influence on the change of residual stress, while the feed rate of each tooth has a signif- icant influence. The values obtained from the simulation are in good agreement with that from the empirical formula.

关 键 词：SICP/A1复合材料 三维有限元模型 铣削 表面残余应力 

分 类 号：TG704[金属学及工艺—刀具与模具] TH140.7[一般工业技术—材料科学与工程]