摘要
为描述Nd:YAG脉冲激光打孔过程中孔的形貌及温度场的变化规律,建立了三维激光打孔的物理模型,利用APDL语言进行编程,对激光作用区域施加高斯激光热流密度载荷,模拟打孔过程中的温度场分布,并利用单元生死技术模拟激光打孔形貌的变化过程。模拟结果:孔的形貌为圆锥形,光斑中心温度瞬间达到5.6×103℃,并以光斑为中心逐渐降低,等温线近似圆形。通过与实际打孔结果对比,发现模拟结果与试验结果相吻合。
For the purpose of depicting the morphology of the holes and the rule of temperature field during Nd:YAG laser drilling,a three-dimensional physical model of laser drilling has been made.Programmed by APDL,the load of Gauss laser heat flux is imposed on the area of laser drilling,the temperature field of Nd:YAG laser drilling is simulated and calculated by ANSYS software,and the result shows that the morphology of the holes are conical,and the highest temperature is about 5.617×103℃at the spot and the temperature declines gradually along the radius with the center of the spot.Compared with the actual drilling results,we find that simulation results and experimental results are coinciding.
出处
《机电工程技术》
2009年第8期16-18,116,共4页
Mechanical & Electrical Engineering Technology
基金
广东省科技攻关项目(编号:2006A10405002)
广东省科技攻关项目(编号:2007B010400067)
关键词
ANSYS
激光打孔
温度场
数值模拟
ANSYS
laser drilling
temperature field
numerical simulation
