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。
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描述，系统推导了三角形平面壳单元用于几何非线性问题分析时的增量平衡方程。
Based on the updated Lagrangian description, the incremental equilibrium equations of triangular plate shell elements for geometrically nonlinear problem are derived.
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