The three-node beam element tangent stiffness matrix including the geometric stiffness matrix is developed according to the nonlinear finite element theory.

Numerical calculation process to obtain the tangent stiffness matrix of structure is deduced and geometric stability of different types of structures are analyzed.

推导了铰接杆系结构切线刚度矩阵较为简便的计算生成过程，便于在编程中实现。

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Relationships between equilibrium matrix and tangent stiffness matrix, linear stiffness matrix, initial stress stiffness matrix are discussed.

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。

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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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The tangent stiffness matrix of three-node beam element is derived using the nonlinear finite element theory.

结合非线性有限元理论，推导了三结点梁单元的切线刚度矩阵。

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It is a convenient method to derive tangent stiffness of any members and structures.

利用该解构规则形成切线刚度矩阵的方法简单、直观，通过平面梁元例题验证了可利用该方法求得任何单元或结构的切线刚度矩阵。

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Tangent Stiffness Operator of a Class of Elastoplastic Materials Coupled with Damage

一类弹塑性损伤材料的切线模量

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Secant and Tangent Stiffness Matrices and Their Relationship in Geometric Nonlinear Analysis

几何非线性分析中的割线刚度矩阵与切线刚度矩阵及其关系

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Study on a Tangent Stiffness Matrix Applied to Geometrically Nonlinear Elastic Plane Frames

平面框架梁单元切线刚度矩阵的研究

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The Accurate Total Equilibrium Equation and Tangent Stiffness Matrix of Three Dimensional Lattice Elements

空间桁架单元精确全量平衡方程及切线刚度

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Principle of stationary incremental potential energy and formation rules of tangent stiffness matrix

势能增量驻值原理与切线刚度矩阵的解构规则波纹管抗扭刚度的计算

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Elasto Plastic Tangent Stiffness Matrix of Three Dimensional Beam Elements

三维梁单元的弹塑性切线刚度矩阵

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Based on the total Lagrangian formulation, the formulas of both secant and tangent stiffness matrices in geometric nonlinear analysis are derived in detail in this paper, and their mathematical relationship is given.

根据T、L描述法，详细推导了几何非线性分析中的割线刚度矩阵和切线刚度矩阵一般表达式，并给出了两者之间的数学关系。

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Density functional theory ( DFT) for nonuniform systems containing chain like molecules based on cavity correlation functions ( CCF) is presented. Chain like molecules confined between two planes are treated as tangent jointed hard sphere chains with intermolecular and intramolecular attractive force between the spheres.

提出了一个基于空穴相关函数的非均匀链状分子系统的密度泛函理论，其中，链分子是相切连接的柔性硬球链，并处于两块平行的无限大平板之间。

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It makes the Tangent Sphere Method more simple by the coincidence of the horizontal plane of projection in counter-revolution with the vertical plane of projection.

在球络法作旋转曲面的阴影中，则为使水平投影H的反旋转与直立投影面v相重合，因而更简化了这种球络法。

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Some Results of k-Tangent Sphere of Simplex

关于单形的k-超切球的一些结果

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In this thesis, we will study systematically the geometric properties of tangent measures, and consider the properties of the tangent space to a measure.

本文系统研究了切测度的几何特征以及对于测度之切空间的几何特征。

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We obtain a series of interesting results including the structure theorem of tangent measures, the compare theorem of the tangent space to a measure.

获得了一些较为有意义的结果，如切测度的结构性定理、关于测度之切空间的比较定理等。

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By means of uniting geometry with algebra, the arc length, tangent line, cotangent space and curvature of curve in four dimensional space are investigated, and the corresponding calculation formula in each cases are given.

用形数结合的观点研究了四维空间中曲线的弧长、切线、法空间和曲率问题，并给出了其计算公式。

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There are some mathematical representations of space curves which will probably be met in actual engineering, and this article discusses how to get the tangent vector of these space curves according to their various mathematical representations.

本文就工程实际中可能出现的几种空间曲线的数学表示形式，分析其切线向量的求法。

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In this paper, the direct formulas of the tangent stiffness matrixes for space trusses are derived, by virtue of the principle of virtual displacement under the Lagrange coordinate;

本文利用虚位移原理，采用Lagrange描述方法，推导出了空间杆元的切线刚度矩阵显式；

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