Meanwhile, the bending of a rectangular plate with complicated boundary conditions is calculated by the principle of minimum potential energy with mixed variables.

同时，应用混合变量的最小势能原理于计算一复杂边界条件矩形板的弯曲。

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Based on the equivalent elasticity method, the plane coupling vibration of a rectangular piezoelectric ceramic plate was studied and the resonant frequency equation was derived out.

利用等效弹性法分析了压电矩形共振器的二维耦合振动，导出了振子共振频率的解析表达式。

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This paper presents an exact solution for a free rectangular plate on elastic foundation by the method of superposition.

本文以叠加法提供在弹性地基上的自由矩形板的精确解。

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