The concept of dynamic constraint mode functions for elements of a frame is introduced and it is used to form the dynamic shape function matrixes of each order for the finite elements of a frame.
文中阐述了框架结构有限单元各阶动约束模态函数的概念，并用它组成结构有限单元各阶动态形函数矩阵。
With shape functions of mean value interpolation and a bivariate Taylor expression, error estimation of mean value interpolation within polygonal elements is analyzed.
采用计算机图形学中的多边形平均值坐标，构造出以多边形顶点为插值节点的无理函数插值方法。
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