通过分离杂交元各阶模态所对应应力场求得单元基本变形模式，从而提出一种直接分析杂交元任意变形性能的基本变形模式方法。
The basic deformation modes of a hybrid stress element are obtained by separating the stress modes corresponding to the different deformation modes of a hybrid stress element.
利用本文之有限元素分析模式与级数解模式，与求解特征值与特征向量的方法，可以求得功能梯度板之自然振动频率、振动模态与挫屈负荷。
The present finite element model and the series solution models are used to find the natural frequencies, vibration modes and buckling loads of the FGM plates.
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