3. The angle-face,edge-face,and face-face contact model are discussed in detail and the contact submatrices are derived by vector analytical and penalty function method.
3.重点讨论了三维块体的角一面、边一面和面一面接触模型,并用矢量方法和罚函数法进行了详细的理论推导,给出了接触子矩阵的表达式。
参考来源 - 三维非连续变形分析方法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The formulas to calculate the variance of a quadratic form with the matrix composed of submatrices are given in this paper.
给出了由子矩阵组成的分块矩阵时，随机变量二次型的方差、协方差的计算公式。
In this paper the algorithms for geometric transformation of image data and the decomposition of the image matrix into submatrices are introduced.
本文提出一种实现图像几何形状变换及图像数据分解成子矩阵的算法和装置。
It is proved that the stiffness matrix of the finite element solution is a block diagonal matrix and its elements are some symmetric and block circulant submatrices.
证明了有限元求解的刚度矩阵是一个块对角阵，且其子矩阵是某种对称、块循环矩阵。
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