有限单元法基础
有限单元法基础-
本文首先根据3维空间梁单元的单元矩阵，以有限单元法为基础，对连续梁桥进行有限元模拟分析，得到桥梁结构模态特征；
Firstly , finite element method is used to get the modal characters of continuous bridge based on the 3-D beam element .
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非网格重剖分模拟宏观裂纹体的扩展有限单元法（Ⅰ：基础理论）
Extended finite element method for modeling cracks without remeshing (ⅰ: basic theory )
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求得了任意线源异常电位变分问题的能量泛函表达式，为本文奠定了有限单元法的数值计算基础。
Through a series of deduction and transformation , the energy functional expression on the variation problem of the arbitrary shape linear current sources abnormal potential can be obtained which is the foundation of the finite element numerical calculation .