中文摘要：

基于精确应力分析的广义六自由度板理论，应用变分原理和损伤力学中的应变等效原理，考虑复合材料铺设层内和层间界面处的损伤效应，建立了具两种损伤模式的复合材料层合板的三维非线性平衡微分方程，且运用有限差分法对考虑损伤简支层合梁板的层间应力进行了求解．

英文摘要：

Based on the general six-degrees-of-freedom plate theory and the accurate stress analysis, using the variational principle and the equivalent strain theory in damage mechanics, the three-dimensional non-linear equilibrium differential equations for the interlaminar stresses of laminated plates with the damage effect of the intra-layers and the interlaminar interface are derived in the framework of the theory of elasticity. With a simply supported laminated beam-plate with damage as an example, an analytical solution is presented by using finite difference method to obtain the interlaminar stresses.