Relationships between equilibrium matrix and tangent stiffness matrix, linear stiffness matrix, initial stress stiffness matrix are discussed. NFM separates stiffness into two parts, which are derived from topology and material.
与几何非线性有限元法进行了比较,深入阐述平衡矩阵与切线刚度矩阵、线性刚度矩阵、初始应力矩阵的联系,指出了该方法进行动不定结构分析的优越性。
参考来源 - 动不定结构的平衡矩阵分析方法与理论研究·2,447,543篇论文数据，部分数据来源于NoteExpress
For geometrical nonlinearity, Updated Lagrangian formulations are adopted to derive the tangent stiffness matrix.
列式法求解切线刚度矩阵来考虑几何非线性。
The precise tangent stiffness matrix of space cable element is derived in this paper by using equilibrium equation.
本文采用状态平衡方程推导出用超越函数表示的空间索单元切线刚度矩阵的精确表达式。
The paper deduces tangent stiffness matrix and set up geometrical nonlinear model of construction control calculation of the cable-stayed bridge.
推演了索单元的切线刚度矩阵，建立了斜拉桥施工控制计算的几何非线性模型。
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