计算物理 ›› 2010, Vol. 27 ›› Issue (2): 251-256.

• 论文 • 上一篇    下一篇

光弹材料载荷过程中红外辐射特征机理的计算分析

王芳1,2, 李英骏1, 张广财3, 唐炼2, 龙志飞1   

  1. 1. 中国矿业大学(北京)力建工程学院, 北京 100088;
    2. 中国石油大学(北京)数理系, 北京 102249;
    3. 北京应用物理与计算数学研究所, 北京 100083
  • 收稿日期:2008-11-17 修回日期:2009-05-11 出版日期:2010-03-25 发布日期:2010-03-25
  • 作者简介:王芳(1969-),女,辽宁盏县,副教授,从事固体物理专业方向的研究.
  • 基金资助:
    国家自然基金(No.10775018,10702010);中国工程物理研究院发展基金(No.2007B0912);国家重点基础研究发展计划(973)项目(No.2006CB202200)资助项目

Numerical Study on Infrared Radiation of Photo-elastic Material Subjected to External Loading

WANG Fang1,2, LI Yingjun1, ZHANG Guangcai3, TANG Lian2, LONG Zhifei1   

  1. 1. School of Mechanics & Civil Engineering, China University of Mining and Technology(Beijing), Beijing 100088, China;
    2. Mathematics-Physics Department, China University of Petroleum(Beijing), Beijing 102249, China;
    3. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2008-11-17 Revised:2009-05-11 Online:2010-03-25 Published:2010-03-25

摘要: 基于材料的热力学关系和能量守恒定律,给出弹性体形变过程中红外辐射温度改变量和辐出度变化的物理计算方程.并结合有限元方法进行物理建模,对光弹材料三点弯载荷实验过程中的红外辐射出射度的分布进行数值计算和模拟.结果与实验结果吻合较好,表明模型及其相关理论是合理的,可以用来量化揭示实验中的红外辐射特征.从而得到一种能够利用计算机量化分析固体材料载荷过程中红外辐射特征机理的计算方法.

关键词: 红外辐射出射度, 红外辐射特征, 应变张量

Abstract: Based on thermodynamics and energy conservation law, an elastic body physical model is established. A physical equation of infrared radiation temperature and radiant exitance is achieved. With finite element method(FEM) the model can be used to analyzing infrared radiant energy of a three-point bending beam of elastic-photo material subjected to external loading in room-temperature. It shows that results calculated are highly coincidence with those of experiments. The model and relative theories are rational in quantitative analysis. A quantitative method is shown to analyse and reveal mechanism of infrared radiation of solid materials by computer.

Key words: infrared radiation energy, infrared radiation characteristics, strain tensor

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