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根据叠加原理将含有分层的复合材料层合梁在横向载荷作用下的受力状态分解为对称与反对称受力状态，再将反对称受力状态分解为无分层梁受反对称横向载荷状态与含分层梁在分层表面承受附加剪切载荷状态．将分层问题归结为在附加剪切载荷状态中，层合梁附加位移与附加应力的分析，并据此建立了一个简单的力学模型．最后，根据工程梁理论得到了由分层引起的附加位移与应力的解析解答，并用能量释放率方法确定了应力强度因子．
According to the principle of superposition, the stress state of laminated composite beams with layered composite under lateral load is decomposed into symmetrical and antisymmetric mechanical states, and then the antisymmetric mechanical state is decomposed into non-layered beams under antisymmetric lateral loads State and Layered Beams Bear Additional Shear Load State on Layered Surfaces. The problem of delamination is attributed to the analysis of the additional displacement and additional stress of the laminated beam in the condition of additional shear load. Based on this, a simple mechanical model is established. Finally, the analytic solution of additional displacement and stress caused by stratification is obtained according to the engineering beam theory, and the stress intensity factor is determined by the energy release rate method.