摘要
为了研究激光切割UO_(2)陶瓷芯块-316Ti不锈钢复合结构温度场的分布,考虑了材料的热物性参数与温度的关系,运用ANSYS有限元软件模拟了该复合结构的激光切割过程,通过ANSYS的Fluent模块实现激光热源C语言程序的UDF加载与编译。研究了不同激光切割工艺参数下的温度分布云图,结果表明:温度分布主要呈现为类彗尾状;最高温度集中在切割热源中心处,工件表面的最高温度随着激光功率的增加和切割速度的降低而升高;当激光功率过小或切割速度过大时,工件会因热量输入不足而切不透;当激光功率过大或切割速度过小时,切缝会因材料熔化区域变大而变宽。仿真结果可以对实际切割过程的工艺参数优化提供参考。
To investigate the temperature-field distribution of UO_(2) ceramic pellets-316 Ti stainless steel composite structure during laser cutting processes,considering the relationship between thermal physical parameters and the temperature of materials,we simulated the laser cutting process for the composite structure using ANSYS finiteelement software.User defined function loading and compiling of laser heat source C language program was realized using the Fluent module of ANSYS.The temperature distribution cloud maps were studied at different cutting parameters.The results show that temperature distribution is mainly expressed as comet-like state.Maximum temperature is concentrated at the center of the cutting heat source,and it increases with increasing laser power and decreasing cutting speed.When the laser power is too low or cutting speed is too high,the workpiece due to insufficient heat input will not be cut through.If the laser power is too high or cutting speed is too low,the kerf width widens due to the lager material melting area.The simulation results can be used to optimize the parameters of the actual cutting process.
作者
史新灵
肖魏魏
宋妮妮
陈志勇
王湘江
王新林
Shi Xinling;Xiao Weiwei;Song Nini;Chen Zhiyong;Wang Xiangjiang;Wang Xinlin(School of Mechanical Engineering,University of South China,Hengyang,Hunan 421001,China;Hunan Provincial Key Laboratory of Ultra-Fast Micro-Nano Technology and Advanced Laser Manufacturing,Hengyang,Hunan 421001,China;School of Electrical Engineering,University of South China,Hengyang,Hunan 421001,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2021年第17期326-335,共10页
Laser & Optoelectronics Progress
