| 用有限元法分析木材中的温度分布 |
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| 引用本文： | 蔡力平,刘一星.用有限元法分析木材中的温度分布[J].林业科学,1992,28(1):90-94. |
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| 作者姓名： | 蔡力平 刘一星 |
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| 作者单位： | 东北林业大学，东北林业大学，东北林业大学 |
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| 摘 要： | 在木材应用中,了解温度在木材中的分布情况,掌握木材在受热时的温度场,才能有效地控制解冻,才能对干燥和防腐问题进行深入的研究,才能合理使用建筑围护材料。近年来,随着计算机应用和计算技术的发展,用数值方法求解木材中的热传导问题将成为有效、实用的方法。在许多种数值方法中,有限差分法和有限元法是目前较为成熟和用得普遍的方法。其中的有限元法是对古典近似计算的归纳和总结,它吸取了有限差
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| 关 键 词： | 有限元 导热系数 换热系数 木材 |
ANALYSIS OF TEMPERATURE DISTRIBUTION ON WOOD BY FINITE ELEMENT METHOD |
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| Cai Liping, Liu Yixing, Shang Deku,.ANALYSIS OF TEMPERATURE DISTRIBUTION ON WOOD BY FINITE ELEMENT METHOD[J].Scientia Silvae Sinicae,1992,28(1):90-94. |
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| Authors: | Cai Liping Liu Yixing Shang Deku |
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| Institution: | Northeast Forestry University |
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| Abstract: | The equations of the two-dimension temperature field were deduced by using the Weighted Residual Integral Galerkin's Method of finite Element Method (FEM) in this paper. The computer program was compiled by FORTRAN and the temperature distribution in wood was calculated according to the heating case. The experimental specie was Larix dahurica. At first longitudinal and tra- nsverse thermal conductivities as well as heat transfer coefficient of the specie were measured by DRM-1. Then the heat source was put on the experimental samples and the temperatures at some points in the samples were measured. The calculated temperatures were compared with the measured temperatures, and it was found that the errors between them could be satisfied the requirement of en- gineering calculation Therefore, we concluded that the temperature distribution in wood could be calculated by FEM. |
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| Keywords: | Finite element method Weighted residual method Thermal conductivity Heat transfer coefficient |
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