摘要
基于激光辅助加热丙烯腈-丁二烯-苯乙烯塑料(ABS)线材提高熔融沉积成型(FDM)打印效率的方案,在分析激光对塑料热作用的基础上,建立连续激光加热塑料的理论模型。根据能量守恒原理,计算推导出激光参数对塑料温度变化影响的关系表达式,并以半导体激光辐照ABS打印线材为例,通过数值计算与分析、ABAQUS仿真激光辐照加热模拟以及实验验证等方法,研究激光参数—温度变化—加热效果三者之间的影响关系。数值计算得出激光辐照下的塑料玻璃态和黏流态转变的激光参数阈值。实验发现,所测热影响区深度与理论计算及仿真模拟结果较为吻合。结果表明,选择合适的激光功率和辐照时间,可以实现ABS塑料由外向内的热穿透。利用所建的激光加热塑料理论模型及相关公式,可为激光辅助FDM 3D打印的研究提供理论依据。
Based on the scheme of laser-assisted heating of acrylonitrile-butadiene-styrene(ABS) wire to improve the printing efficiency of melt deposition molding(FDM),a theoretical model of continuous laser heating plastic was established on the basis of analyzing the thermal effect of laser on plastics.According to the principle of energy conservation,the expression of the relationship between laser parameters and polymer temperature change was calculated and deduced.Taking semiconductor laser irradiation ABS printing wire as an example,the relationship among laser parameters,temperature change and heating effect was studied by numerical calculation and analysis,ABAQUS simulation of laser irradiation and experiment verification.The threshold values of laser parameters for the transition from glassy state to viscous state of plastic polymer irradiated by laser are calculated numerically.It is found that the measured depth of heat affected zone is in good agreement with theoretical calculation and simulation results.The results show that the thermal penetration of ABS plastic from outside to inside can be realized by choosing appropriate laser power and irradiation time.The theoretical model and related formulas of laser heating plastic polymer can provide theoretical basis for the research of laser-assisted FDM 3D printing.
作者
于小辉
程联军
夏振宝
石洋
张鹏飞
张传伟
Yu Xiaohui;Cheng Lianjun;Xia Zhenbao;Shi Yang;Zhang Pengfei;Zhang Chuanwei(College of Mechanical and Electrical Engineering,Qingdao University,Qingdao 266071,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2022年第10期47-52,共6页
Engineering Plastics Application
基金
国家自然科学基金项目(52075278)
山东省重点研发计划(2019GGX104072)
山东省自然科学基金项目(ZR2019QEM010)
山东省高等学校青创科技支持计划。
关键词
激光辅助加热
理论模型
丙烯腈-丁二烯-苯乙烯塑料
温度场仿真
laser assisted heating
theoretical model
acrylonitrile-butadiene-styrene plastic
simulation temperature field
