Laser manufacturing laboratory, combining modern control tecnology and innotive processing mechanics with laser manufacturing technology, researches deep into crital problems desiding the process and quality of manufacturing to realizing integration, intelligention and flexibility of advanced laser manufacturing.

 

 

Main researcch direction:

  • High power laser manufacturing mechanics

  • Interaction between laser and materials and its numerical simulation

  • Full antomatic control of integrated, advanced and flexible laser manufacturing system

  • spatial transmission of high power muti-mode laser beam

  • integration research of PC system based on intelligent control theory

 

Professor Yu Gang

Key Lab of Mechanics in Advanced Manufacturing (MAM)
Instituteof Mechanics(IM) ChineseAcademyof Science (CAS)
No.15 Beisihuan West Road BeijingPRC 100190  
    

Tel: 86-10-82544350 

Email:  gyu@imech.ac.cn

 

Ex-members

Students majoring in Mechanics, physics and related displines are welcomed!

  New Progresses

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内容

Article:送粉式激光熔覆中瞬态温度场与几何形貌的三维数值模拟

 

题名:  送粉式激光熔覆中瞬态温度场与几何形貌的三维数值模拟
其他题名:  Three-dimensional numerical simulation of transient temperature field and coating geometry in powder feeding laser cladding
作者:  Liu H(刘昊);  Yu G(虞钢);  He XL(何秀丽);  Li SX(李少霞);  Zheng CY(郑彩云);  Ning WJ(宁伟健);  Ge ZF(葛志福)
通讯作者:  虞钢
发表日期:  2013-12
关键词:  激光技术;  激光熔覆;  数值模拟;  几何形貌;  瞬态温度场;  laser technique;  laser cladding;  numerical simulation;  coating geometry;  transient temperature field
摘要:  针对送粉式激光熔覆的特点,基于生死单元法建立了一种可以同时计算瞬态温度场及熔覆层几何形貌的三维数值模型,模型中考虑了送粉过程中激光能量的衰减和粉末颗粒的温升。基于该模型对送粉式激光熔覆过程中的温度场分布和几何形貌特点进行了分析。结果表明,在熔覆开始较短时间后,工件的瞬态温度分布与熔覆层几何形貌基本保持稳定。进行了不同送粉速率下的送粉式激光熔覆试验,对比了熔覆层横截面几何形貌的试验结果和计算结果,熔覆层表面轮廓线与试验结果基本保持一致,熔覆层的宽度、高度和熔深与试验结果基本吻合,说明了所建立的激光熔覆层几何形貌计算模型的有效性和可靠性。
通讯作者邮箱:  gyu@imech.ac.cn
原文网址:  http://dx.doi.org/10.3788/CJL201340.1203007
刊名:  中国激光
收录类别:  EI;  CSCD
URI标识:  http://dspace.imech.ac.cn/handle/311007/48074
产权排序:  [刘昊;虞钢;何秀丽;李少霞;郑彩云;宁伟健;葛志福] 中国科学院力学研究所
专题: 先进制造工艺力学重点实验室_期刊论文

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