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Block circulant matrices and applications in free vibration analysis of cyclically repetitive structures

机译:块循环矩阵及其在循环重复结构自由振动分析中的应用

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In this paper, block circulant matrices and their properties are investigated. Basic concepts and the necessary theorems are presented and then their applications are discussed. It is shown that a circulant matrix can be considered as the sum of Kronecker products in which the first components have the commutativity property with respect to multiplication. The important fact is that the method for block diagonalization of these matrices is much simpler than the previously developed methods, and one does not need to find an additional matrix for orthogonalization. As it will be shown not only the matrices corresponding to domes in the form of Cartesian product, strong Cartesian product and direct product are circulant, but for other structures such as diamatic domes, pyramid domes, flat double layer grids, and some family of transmission towers these matrices are also block circulant.
机译:本文研究了块循环矩阵及其性质。介绍了基本概念和必要的定理,然后讨论了它们的应用。结果表明,循环矩阵可以看作是Kronecker积的总和,其中第一分量相对于乘法具有可交换性。重要的事实是,用于这些矩阵的块对角化的方法比以前开发的方法简单得多,并且不需要找到用于正交化的其他矩阵。如图所示,不仅与笛卡尔乘积,强笛卡尔乘积和直接乘积形式的穹顶对应的矩阵都是循环的,而且对于其他结构(如径向穹顶,金字塔穹顶,平坦的双层网格以及某些传输族)这些矩阵的塔也是块循环的。

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