摘要
在三维真实表面形貌分析的基础上,对激光透射焊接过程进行了模拟分析。利用表面粗糙度测量仪对聚碳酸酯(PC)试件的表面粗糙度进行了测量,构建了表面粗糙轮廓的数学模型,并进行了实体建模,通过ANSYS Fluent软件对光滑表面以及真实粗糙表面进行了激光焊接模拟,分析了焊缝断口微观形貌。结果表明,粗糙PC表面的焊接强度要低于光滑表面的。
The laser transmission welding process is simulated based on the analysis of the real three-dimensional surface topography.The surface roughness of polycarbonate（PC）sample is measured by using a surface-roughness measuring instrument,the mathematical model of the surface roughness profile is built,and the solid modeling is done.The laser welding of smooth surfaces and real rough surfaces are simulated with the software of ANSYS Fluent,and the fracture morphology of the weld is analyzed.The results show that the welding strength of the rough PC surface is lower than that of the smooth surface.
出处
《激光与光电子学进展》
CSCD
北大核心
2017年第9期215-221,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(51475315)
上海市科技创新行动计划智能装备制造项目(15111102802)
关键词
激光技术
透射焊接
表面粗糙度
分形原理
温度场
有限元法
laser technique
laser transmission welding
surface roughness
fractal theory
temperature field
finite element method
