According to the perturbation theory in degenerate state and wave function property of the hydrogen atom, the matrix element's distribution law in the secular equation is discovered. 根据简并态微扰理论和氢原子波函数的性质,得到久期方程中微扰矩阵元的分布规律。
A new nonlinear finite element model which applies subsystem connect beams element and space degenerate shell element to analyze eccentric braced structural energy-dissipation and links collapse mechanism is presented in this paper. 本文提出了应用子结构法联合梁单元与空间退化曲壳单元分析偏心支撑钢框架耗能性能及耗能梁段破坏机理的非线性有限元分析模型。
To analyze the laminated orthotropic composite plates, the 3-D degenerate laminated plate element of 20 nodes 48 freedom is presented herein according to the document [ 1]. 文中构造出20结点48自由度三维退化层合板单元,用于分析各层片均为正交各向异性的叠层复合材料板的弯曲问题。
Estrogen could activate telomerase directly by forming estrogen/ estrogen receptor complex binding to imperfect palindromic degenerate estrogen responding element in promoter region of TERT gene. 雌激素也可与雌激素受体形成复合物,直接与TERT基因启动子区域内的退化雌激素反应元件结合反式激活端粒酶。
During iteration process, rectangular elements may degenerate to triangular element, which makes boundary of plate more smooth. 迭代过程中,矩形单元可退化为常应变三角元,使结果的边界过渡更为光顺。
A degenerate 2-dimensional ( 2-D) drop-off element is introduced to carry out the global analysis. At the vicinity of the drop-off where the stress concentration is high a local analysis with a refined mesh is performed with the results of the global analysis. 介绍了一种简化的2-D有限元模型进行整体分析,在过渡段附近有应力集中的位置采用细化网格进行局部分析。