three-node beam element 三节点梁单元
spatial three-node beam element 空间三结点梁单元
beam node 梁柱节点
beam-column node 梁柱结点
beam column node area 梁柱节点区
steel beam integral node 钢梁整体节点
The three-node beam element tangent stiffness matrix including the geometric stiffness matrix is developed according to the nonlinear finite element theory.
进而依据非线性有限元理论推导了该三结点梁单元的几何刚度矩阵的单元切线刚度矩阵；
Based on the theory of the bending of non-prismatic beam, the paper has derived a rigidity matrix and the equivalent node load of the rigid-frame element with variable sections.
本文从非棱柱形梁的弯曲理论出发，推导出了变截面刚架元的单元刚度矩阵和等效结点载荷。
The Recursion formulae of the node corner displacement are derived in the text and that internal of the beam can be solved.
推出了求解无结点侧移连续梁的结点转角位移的递推公式，进而求得梁板的内力。
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