本文阐述了分析干燥应力的热弹性理论,推导了本构方程和平面干燥应力问题的有限元计算公式,并计算和测定了水曲柳板的干燥应力。其结果表明:弹性解答适用于分析干燥初期的应力状态;应力最大值在中央剖面的上下边界处,木材的干缩过程存在耦合效应。 In this paper, the thermoelastic theory of drying stress is expounded, the constitutive equation and the finite element formula of the plane drying stress are deduced, and the drying stress of the ash is calculated and measured. The results show that the elastic solution is suitable for the analysis of the initial state of stress during drying. The maximum value of stress has the coupling effect on the process of wood shrinkage at the upper and lower boundaries of the central section.