In this paper, the lap displacement stiffness matrix of the space cable is derived bac on the updated Total Lagrangian Formulation.
基于修正的拉格朗日坐标描述法，推导了空间纤绳单元的大位移刚度矩阵。
And the corresponding thin-walled element stiffness equation was formulated. The apparent formulation of element stiffness matrix under the local coordination was attained.
并建立了相应的薄壁单元刚度方程，从而得出了局部坐标系下单元刚度矩阵的显式。
According to the features of reinforcing bars in the wall, authors model the combing material model of reinforcement and concrete and get the calculation formulation of a stiffness matrix.
根据框支墙中钢筋的特点，确定了钢筋与混凝土的材料组合模型，导出刚度矩阵的计算公式。使框支剪力墙结构的非线性有限条法分析成为可能。
Then, based on the CR formulation, the internal force vector and tangent stiffness matrix of large rotation and small strain space bar and plane beam element are deduced.
其次，基于CR列式法推导出了大旋转小应变空间杆单元及平面梁单元的内力矢量及切线刚度矩阵；
Then, based on the CR formulation, the internal force vector and tangent stiffness matrix of large rotation and small strain space bar and plane beam element are deduced.
其次，基于CR列式法推导出了大旋转小应变空间杆单元及平面梁单元的内力矢量及切线刚度矩阵；
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