脉冲激光烧蚀树脂CBN砂轮的数值模拟研究  

Numerical Simulation of Ablation of Resin-Bonded CBN Grinding Wheels by Pulsed Laser

作　　者：陈根余[1] 彭凯[1] 李力钧[1] 刘礼[1] 

机构地区：[1]湖南大学,长沙410082

出　　处：《中国机械工程》2005年第6期557-561,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50005005);湖南省重点科技攻关项目(04GK2004)

摘　　要：针对声光调 Q YAG脉冲激光修整树脂 CBN砂轮,建立了单脉冲激光烧蚀过程的数学模型。应用有限元方法模拟出各种激光功率密度条件下的温度场和凹坑形貌,获得单脉冲烧蚀凹坑深度与激光功率密度的关系曲线,并与试验结果进行比较,表明所建立的模型可以正确描述实际物理过程。A mathematical model was created to describe single pulsed laser ablation which was occurred in the experiments of truing and dressing resin-bonded CBN grind wheels by acoustic-optic Q-switched YAG pulsed laser. The temperature field, shape and depth of the craters ablated by different laser power densities was calculated with finite element method. The model is proved to be correct by contrast with the experimental results.

关 键 词：激光烧蚀 树脂CBN砂轮 传热模型 有限元 温度场 

分 类 号：TG74[金属学及工艺—刀具与模具] TN24[电子电信—物理电子学]