The stress concentration factors of plate welded joints have been calcu-lated by the triangular prism isoparameter elements and hexahedron isoparameter elements(8 to 21 nodes)in SAP5.
本文应用三维有限元理论,构造了一类五面体6~15节点等参单元的形函数,提出了在五面体单元内的Gauss积分处理方法,建立了相应的单元刚度矩阵。
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