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本文用分区混合有限元法分析拱坝的水平裂纹。特点是在裂纹端部采用应力型奇异单元,其余部份采用位移型单元,用分区混合原理建立以裂纹强度因子及各结点位移为未知量的线性数方程组。
In this paper, the partitioned mixed finite element method is used to analyze the horizontal crack of arch dam. It is characterized by using stress-type singular elements at the crack tip and displacement elements in the rest. A linear system of equations with crack intensity factors and the displacement of each node as an unknown quantity is established by using the partition mixing principle.