材料期刊网

为研究等腰梯形蜂窝芯玻璃钢夹芯板传热机制,利用导热仪对夹芯板的传热性能进行了实验测试与模拟研究。结果表明：夹芯板稳态导热系数模拟结果与Swann and Pittman经验公式的计算结果相吻合,验证了数值计算胞体平面模型的合理性；Part2为夹芯板稳态传热的主要构件,Part2胞壁厚度与边长对夹芯板导热系数有显著影响,Part2高度、Part1与Part3厚度及面板厚度对夹芯板导热系数的影响偏弱；同时,若仅需降低夹芯板的导热系数,而忽略对夹芯板静力学性能要求,应该更换蜂窝芯层材料；若需夹芯板同时满足隔热性能与静力学性能,多层蜂窝芯夹芯板是很好的选择。

In order to investigate the heat transfer mechanism for isosceles-trapezoid honeycomb core of glass steel sandwich panel,experiment measurement using thermal conductivity meter and simulation investigation on heat transfer performance of sandwich panel were conducted.The results indicate that simulation results for the steady thermal conductivity coefficients of sandwich panels are identical with the calculation results of Swann and Pittman empirical formula,which validates the reasonability of cell plane model for numerical calculation.Part2 is the main steady heat transfer part for sandwich panel,so Part2 cell-wall thickness and side length have strong influences on thermal conductivity coefficient of sandwich panel,and the influences of Part2 height,Part1 and Part3 thickness as well as panel thickness on thermal conductivity coefficient is weak.Meanwhile,if only the thermal conductivity co-efficient of sandwich panel is needed to be reduced and ignoring the demanding for static mechanical properties of sandwich panel,the honeycomb core layer material should be replaced;if both of the heat-insulation performance and static mechanical properties of sandwich panel are required to be satisfied at the same time,the multilayer hon-eycomb core of sandwich panel is an excellent choice.