如此，既能与边界单元几何形状基本拟合，又能高精度地模拟裂纹尖端附近位移和应力变化规律，并提高计算效率。

So such, both shape consistent with boundary element geometrical shape, and simulate crack tip close-by variety law of stress and strain with higher precision, and enhancing calculative efficiency.

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进一步和有限元法相结合，得到了能够分析具有任意边界条件和几何形状的复合材料叠层厚板的半解析数值方法即哈密顿单元方法。

Combined with the finite element method, the semi-analytical numerical method presented can be used to analyze thick composite laminates with arbitrary boundary conditions and geometrical shapes.

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在极限荷载作用下，钢筋混凝土板内常常存在有薄膜效应，它是由于板的各分块的边界条件和几何形状的变位而造成的。

Due to the boundary conditions and the geometric deformation under the ultimate load, the reinforced concrete slabs are usually subjected to membrane action.

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