东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (12): 1717-1720.DOI: -

• 论著 • 上一篇    下一篇

中厚板控冷过程的温度-应力耦合计算与翘曲分析

周娜;王丙兴;吴迪;张殿华;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-12-15 发布日期:2013-06-24
  • 通讯作者: Zhou, N.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50104004)

Temperature-stress coupling computation and warping analysis for controlled cooling of plate

Zhou, Na (1); Wang, Bing-Xing (1); Wu, Di (1); Zhang, Dian-Hua (1)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-12-15 Published:2013-06-24
  • Contact: Zhou, N.
  • About author:-
  • Supported by:
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摘要： 以集管冷却时钢板表面的对流换热边界条件为基础,利用ANSYS软件,采用间接热力耦合法对三种冷却模式下钢板冷却过程的温度场和应力/应变场进行数值模拟,分别对模拟得到的横断面上的温度时间历程曲线和应力应变曲线进行比较,在此基础上进行了三种冷却模式下钢板翘曲变形的分析.分析结果表明,交替冷却方式有助于减小钢板厚度方向的温度梯度,温度梯度对钢板的翘曲变形影响不大,上下表面的冷却均匀性是钢板翘曲的主要原因.此分析结果为中厚板控冷获得平直板形提供了理论基础.

关键词: 中厚板, 控制冷却, 热力耦合, 有限元法, 翘曲

Abstract: Based on the boundary conditions of heat convection on plate surface during header cooling, a numerical simulation was done using the software ANSYS in combination with indirect temperature-stress coupling computation for the temperature field and stress/strain field in three different cooling processes. Comparing the different temperature-time histories and stress-strain curves on plate's cross section as resulting from simulation, the plate warping deformation due to three different cooling modes was analyzed. The results showed that the alternate cooling with big and small headers benefits the decrease in the temperature gradient along plate thickness, and the temperature gradient affects unobvious the plate warping. The cooling homogeneity on plate's top and bottom surfaces are the main cause for plate warping. The conclusion will provide a theoretical foundation to control the cooling process for plates.

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