stiffness matrix

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.

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Stiffness matrix of the model and element stiffness was developed.

推导了模型的单元刚度矩阵和各杆件的刚度.

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A considered shear deformation affect, exactitude multi-segment bar stiffness matrix was deduced by structural mechanics principle.

利用结构力学原理推导得出了考虑剪切变形影响的精确多分段杆单元模型的单元刚度矩阵.

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The stiffness matrix was concretely expressed with subsection functions and little parameter, and the system differential function could be simplified into some isolated eigen-function.

将系统位移分为静位移和动位移，用分段函数及小参数表示系统刚度矩阵，导出了系统正则化微分方程。

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New Methods of Finite Element Stiffness Matrix ′ s Formation, Assemblage and Storage Suitable for Preconditioned Conjugate Gradient Method in Hydraulic Structures

适宜PCG方法的水工结构有限元刚度矩阵形成、组集和存储的新方法

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In this paper, a tangent stiffness matrix of members of latticed shell was derived on the basis of using Timoshenko's beam-column theory.

本文采用Timoshenko梁柱理论，推导出网壳杆件的切线刚度矩阵。

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An untraditional numerical integration scheme, i.e., Chebyshev points quadrature ( CPQ), is suggested by us to form the elemental mass matrix and stiffness matrix.

一种由我们提出的，不常用的数值积分方案，即切比雪夫点积分方案（CPQ），被用来生成单元质量矩阵和刚度矩阵。

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Geometric Nonlinear Stiffness Matrix Based on Tension-Compression and Torsion-Warping Interpolation Function

基于拉压与翘扭插值函数几何非线性刚度矩阵

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Using the concept of plastic hinge, the tangent stiffness matrix of spatial beam element is formed. At the same time the effect of geometry nonlinear property, residual stress and end restraint are considered.

引入塑性铰的概念，建立了空间梁单元弹塑性刚度矩阵，同时考虑几何非线性、残余应力、端部约束等的影响，给出了一套钢结构复杂体系的有限元计算方法。

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What is the feature of general element stiffness matrix?

一般的单元刚度矩阵有什么特点?

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The whole stiffness matrix of structural system is derived by condensation approach.

分析了结构运动方程,并采用缩聚法建立结构总侧移刚度.

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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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Based on nonlinear finite element theory, the tangent stiffness matrix in space frames is deducted and the program of nonlinear dynamic stability is compiled.

本文以此单层柱面正交异型网壳结构作为研究对象，根据非线性有限元理论建立了空间梁单元的切线刚度矩阵，编制了非线性动力稳定程序。

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Experimental Determination of the Structure of NN for Stiffness Matrix Computation

单刚矩阵计算用神经网络结构的实验确定

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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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After discussing method for integrating stiffness matrix and load embattle, they are integrated with'set-in-right-position'rule.

通过对刚度矩阵及荷载列阵集成方法的探讨, 用“对号入座 ” 的方法得到结构整体刚度矩阵和结构整体荷载列阵.

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Formulae which couple the TWF method with FEM were given based on the stiffness matrix derivative method and Gauss-Chebyshev Quadrature.

本文将热权函数与有限元法直接耦合，给出了基于刚度阵导数法和Gauss-Chebyshev积分的热权函数计算格式。

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Penalty element method and derivation of penalty element stiffness matrix are described.

叙述了罚单元法和罚单元刚度矩阵的推导过程.

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Ladder finite strip stiffness matrix is derived to Solve the bending problems of boundary conditions.

推导了新型梯形有限条刚度矩阵的计算格式.

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The computation of element stiffness matrix is important and time consuming in the finite element method.

有限元单元法是塑性成形领域应用比较广泛的数值分析法之一.

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The prestressed lattice structure is a new type of structural form. The tangent stiffness matrix of the spatial cable element would be introduced in the process of nonlinear analysis in the calculation of this type of structure.

预应力空间网格结构是一种新型的结构形式，对该结构进行非线性分析计算时，需要采用空间索单元的切线刚度矩阵。

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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。

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Based on the force-method equation , the stiffness matrix and fixed-end nodal displacement and force vector derived.

在力法方程的基础上,给出了组合梁单元的刚度矩阵、杆端位移向量及杆端荷载向量并建立了刚度方程.

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Air is assumed as compressible, inviscid and potential, nonlinear stiffness matrix and coupling aerodynamic expression have been deduced.

假定空气是可压缩 、 无粘性和有势的, 推导了薄膜结构的非线性刚度矩阵和空气与薄膜结构耦合作用的气动力表达式.

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The stiffness matrix of synthetic dual plate-spring interlayer element is deduced.

导出了双层板 ― 性夹层的综合单元刚度矩阵.

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The plastic elemental stiffness matrix was derived by plastic-hinge method.

然后用塑性铰法推导了单元的塑性刚度矩阵.

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As a result, the element tangent stiffness matrix is symmetric and is updated by using the total values of the nodal variables in an incremental solution procedure.

因而，得到的单元切线刚度矩阵是对称的，此外在增量求解过程中用节点变量的全量进行更新。

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Meanwhile, the internal force vector and the element tangent stiffness matrix could be obtained from calculating directly the first derivative and second derivative of the element strain energy with respect to the nodal variables, respectively.

同时，采用矢量型转动变量，可以直接从计算单元应变能泛函对节点变量的一阶和二阶偏微分得到单元内力矢量和切线刚度矩阵。

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This paper mainly deals with the secant method used on stiffness matrix.

主要说明割线法在刚度矩阵上的应用.

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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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