增材制造数值模拟的研究  

Research on numerical simulation of additive manufacturing

作　　者：薛磊 白洁 袁战伟[1] 马瑞[2] 郑俊超 XUE Lei;BAI Jie;YUAN Zhanwei;MA Rui;ZHENG Junchao(College of Materials Science and Engineering,Chang'an University,Xi'an 710064,China;Beijing Institute of Mechanical Power Research,Beijing 100000,China)

机构地区：[1]长安大学材料科学与工程学院,西安710064 [2]北京动力机械研究所,北京100074

出　　处：《内蒙古工业大学学报（自然科学版）》2023年第5期428-433,共6页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：国家重点研发计划项目(No.2018YFB1105900);陕西省2021年自然科学基础研究计划项目(No.2021JQ-286);长安大学中央高校基本科研业务费专项资金资助项目(No.300102311403)。

摘　　要：制造过程中的参数差异会产生气孔、裂纹和未熔粉等缺陷,制备过程中的热应力也会导致零件的卷曲和变形,在优化工艺参数的过程中往往费时费力,阻碍了增材制造技术向工业化大规模应用的转变。数值模拟仿真技术因其具备快速、便捷和低成本等优势,可以为工艺参数的研究提供科学依据,大大缩短零件的生产周期,通过分析工艺参数对温度场与熔池形貌、形变应力和凝固微观组织三方面的影响,通过增材制造数值模拟研究,探讨存在的问题及未来的发展方向。Parameter differences in the manufacturing process will produce defects such as porosity,cracks and unmelt powder,and thermal stress in the preparation process will also lead to curling and deformation of the parts,and it is often time-consuming and laborious to optimize the process parameters,which hinders the transformation of additive manufacturing technology to industrialized large-scale applications.Because of its advantages of high-speed,convenience and low cost,numerical simulation technology can not only provide a scientific basis for the research of process parameters,but also greatly shorten the production cycle of parts.In this paper,the effects of process parameters on temperature field,molten pool morphology,deformation stress and solidification microstructure are analyzed,and the existing problems and future development directions of additive manufacturing numerical simulation are summarized.

关 键 词：增材制造 数值模拟 温度场 应力场 凝固微观组织 

分 类 号：TH164[机械工程—机械制造及自动化]