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基于冯·卡门模型，选择中心挠度为摄动参数，利用摄动方法将正交异性矩形薄板大挠问题的非线性偏微分方程组逐级线性化，导出了各级摄动对应的几个线性偏微分方程组，然后再借助变分法求解，得到了均布载荷作用下正交异性矩形薄板的载荷-挠度曲线。
Based on the von Karman model, the deflection of the center is chosen as the perturbation parameter, and the perturbation method is used to linearize the system of nonlinear partial differential equations for the large deflection problem of orthotropic rectangular thin plates. Some linearities Partial differential equations, and then solved by variational method, the load-deflection curve of the orthotropic rectangular thin plate under uniform load is obtained.