| 光弹材料载荷过程中红外辐射特征机理的计算分析 |
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| 引用本文： | 王芳,李英骏,张广财,唐炼,龙志飞. 光弹材料载荷过程中红外辐射特征机理的计算分析[J]. 计算物理, 2010, 27(2): 251-256 |
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| 作者姓名： | 王芳 李英骏 张广财 唐炼 龙志飞 |
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| 作者单位： | 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 |
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| 基金项目： | 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 |
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| 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.
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| 关 键 词： | 红外辐射出射度 红外辐射特征 应变张量 |
| 收稿时间： | 2008-11-17 |
| 修稿时间： | 2009-05-11 |
Numerical Study on Infrared Radiation of Photo-elastic Material Subjected to External Loading |
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| WANG Fang,LI Yingjun,ZHANG Guangcai,TANG Lian,LONG Zhifei. Numerical Study on Infrared Radiation of Photo-elastic Material Subjected to External Loading[J]. Chinese Journal of Computational Physics, 2010, 27(2): 251-256 |
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| Authors: | WANG Fang LI Yingjun ZHANG Guangcai TANG Lian LONG Zhifei |
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| Affiliation: | 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 |
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| 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 rationa... |
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| Keywords: | infrared radiation energy infrared radiation characteristics strain tensor |
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