复合材料的边界吸湿模型

在研究复合材料层合板的吸湿和退湿过程中，常常采用菲克定理来描述水分在层合板中的扩散过程中，根据层合板表面浓度逼近平衡浓度的不同响应，提出了三类不同的边界条件模型来模拟复合材料层合板在不同环境介质下的水分扩散过程，并给出了计算吸湿量的解析解和有限差分数值计算方法。

Models of Moisture Absorption at the Boundaries in Composites

In the study of moisture absorption and desorption in composites, Fick's law is often used to describe the diffusion process of water in the composites. As the actual concentration on the surface reaches the equilibrium concentration with varied responses,there different moistrue absorption models are illustrated to simulate the diffusion processes of water at the boundaries of composites. Both analytic solutions and numerical calculation method are also presented to estimate the moisture contents, and all the results are in good agreement.