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直接金属选区激光烧结热应力场有限元模拟

沈显峰, 王洋, 姚进, 汪法根, 杨家林

沈显峰, 王洋, 姚进, 汪法根, 杨家林. 直接金属选区激光烧结热应力场有限元模拟[J]. 激光技术, 2005, 29(4): 343-346.
引用本文: 沈显峰, 王洋, 姚进, 汪法根, 杨家林. 直接金属选区激光烧结热应力场有限元模拟[J]. 激光技术, 2005, 29(4): 343-346.
SHEN Xian-feng, WANG Yang, YAO Jin, WANG Fa-gen, YANG Jia-lin. Finite element simulation of thermal stress distribution in direct metal laser sintering[J]. LASER TECHNOLOGY, 2005, 29(4): 343-346.
Citation: SHEN Xian-feng, WANG Yang, YAO Jin, WANG Fa-gen, YANG Jia-lin. Finite element simulation of thermal stress distribution in direct metal laser sintering[J]. LASER TECHNOLOGY, 2005, 29(4): 343-346.

直接金属选区激光烧结热应力场有限元模拟

基金项目: 

中国工程物理研究院基金重大资助项目(2002Z0303)

详细信息
    作者简介:

    沈显峰(1977- ),男,博士研究生,主要从事选区激光烧结技术研究.

    通讯作者:

    姚进,E-mail:jinyao163@163.com

  • 中图分类号: TG156.99

Finite element simulation of thermal stress distribution in direct metal laser sintering

  • 摘要: 在考虑随温度变化而变化的热传导、比热容等热物性参数的作用下,建立了直接金属多道烧结的三维有限元分析模型。采用先进行温度场分析、再进行应力场分析的间接热力耦合策略。模拟结果显示,随着烧结过程的进行,由于已烧结部分的影响,最大热应力有减小的趋势;在扫描烧结道的前方有比后方更大的应力分布,这与实验结果相吻合。
    Abstract: Taking into account temperature-dependent thermal conduction and heat capacity,a three-dimensional transient finite element model was established.A sequentially analysis of coupled thermal-stress was employed.Some conclusions related to the simulation results are made:maximum thermal stress lessens with sintering going on owing to effect of sintered region;the region ahead of sintering has greater stress distribution than behind.
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出版历程
  • 收稿日期:  2004-07-29
  • 修回日期:  2004-09-07
  • 发布日期:  2005-07-24

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