Chai Yuan, Liang Shanqing, Zhou Yongdong, Lin Lanying, Fu Feng
Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China.
Materials (Basel). 2019 Aug 23;12(17):2709. doi: 10.3390/ma12172709.
This study presents a model for simulating the microscopic heat transfer processes in a wood-metal composite material. The model was developed by analyzing the microstructure of experimental samples comprising a melted alloy impregnated in a wood matrix. According to the thermal parameters of the materials and the boundary conditions, an analytical model of microscale heat transfer was established using Abaqus finite element analysis software. The model was validated experimentally by comparing temperature curves obtained via simulation and experiments; the resulting correlation coefficient was 0.96557. We then analyzed the temperature distribution of the composite material with different cell geometries and heat transfer conditions (heat transfer direction and applied temperature). The thermal properties of the unit cell models were in good agreement with the general trends predicted by several heat transfer equations. This study provides a method for analyzing the microscale heat transfer process in wood-based composites. In addition, the model framework characteristics can be used to evaluate the heat transfer mechanism of impregnated modified wood.
本研究提出了一种用于模拟木材-金属复合材料微观传热过程的模型。该模型是通过分析实验样品的微观结构而开发的，实验样品包括浸渍在木材基体中的熔融合金。根据材料的热参数和边界条件，使用Abaqus有限元分析软件建立了微观尺度传热的解析模型。通过比较模拟和实验获得的温度曲线对模型进行了实验验证；所得相关系数为0.96557。然后，我们分析了具有不同单元几何形状和传热条件（传热方向和施加温度）的复合材料的温度分布。单元模型的热性能与几个传热方程预测的总体趋势吻合良好。本研究提供了一种分析木质复合材料微观传热过程的方法。此外，模型框架特性可用于评估浸渍改性木材的传热机理。
