SiCp/Al复合材料圆柱体镦粗过程的有限元模拟  

Finite element simulation of upsetting process for composite cylinder SiCp/Al

作　　者：刘丹[1] 周丽[1] 王唱舟 

机构地区：[1]沈阳理工大学机械工程学院,辽宁沈阳110159

出　　处：《锻压技术》2015年第7期7-12,37,共7页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51175353)

摘　　要：运用有限元软件Abaqus对Si Cp/Al复合材料进行三维热力耦合模拟,分析了各变形工艺参数对Si Cp/Al复合材料圆柱体镦粗过程的损伤场、应变场和温度场的影响规律,强调了鼓形区裂纹的出现。利用Origin软件对不同摩擦系数下坯料的等效应变值和载荷行程值进行数据处理,并观察其变化规律。结果表明:变形量对坯料的损伤场、应变场和温度场有显著影响,当变形量为20%和30%时,锻件鼓形区不出现裂纹,变形量增加到40%时,鼓形区出现裂纹,而摩擦系数对温度场和损伤场的影响较小,随着摩擦系数的增大,中心等效应变值和载荷值也增大。The composite cylinder SiCp/Al was investigated by 3D thermal-mechanical coupled simulation based on the finite element soft- ware Abaqus. The influences of the deformation parameters on damage field, strain field and temperature field during the upsetting process of composite cylinder SiCp/Al were analyzed, and the emergence of the drum-shaped area cracks was emphasized. The equivalent strain and load stroke of billet under different friction coefficients were carried out through data processing by Origin software, and their changing regularities were recorded. The results show that the amount of deformation has significant effect on the simulation results. When the de- formation amount is 20% or 30%, the drum-shaped zone of forging has no cracks, and when the deformation amount increases to 40%, the drum-shaped zone cracks, but the friction coefficient has little effect on the temperature field and the damage field. With the increase of the friction coefficient, the center equivalent strain and load value increase too.

关 键 词：SICP/AL复合材料 镦粗 有限元模拟 鼓形区裂纹 

分 类 号：TB333[一般工业技术—材料科学与工程] TG316.11[金属学及工艺—金属压力加工]