Method for computing the element restoring force, rather than the stiffness matrix, is the most important factor that determines the accuracy of a geometric nonlinear finite element problem.
几何非线性单元的精度主要决定于单元恢复力的计算方法，刚度矩阵对单元精度的影响很小。
Employing the virtual displacement principle and considering constraint conditions of material interface, the stiffness matrix and equivalent load vector for this element are established.
应用虚位移原理和结合考虑材料交界面上的约束条件，文章建立了接触单元的刚度矩阵和等效荷载向量。
A stiffness matrix of simple rectangular plate bending element with 12 parameters expressed in explicit form is derived.
推导了以显式表示的12个自由度的简单矩形板弯曲元素刚度矩阵。
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。
By using the moment-curvature relationships of the member section, the inelastic element stiffness matrix is derived directly from the slope-deflection equation of clastic member.
利用杆件截面的弯矩—曲率关系，可以直接由弹性杆件的转角—位移方程建立单元的非线性刚度矩阵。
Stiffness matrix and load vector were founded on developing eigen-equation for wall element and applying principle of virtual work.
通过推导单元特征方程的解及应用虚功原理，建立了墙元的刚度矩阵和荷载向量。
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。
The super element stiffness matrix and the stiffness contribution of substructures to the whole structure are developed.
推导了超级元刚度矩阵及子结构参与协同承载时对整体结构的刚度贡献。
In this paper, a improved geometric stiffness matrix of a column element considering axial force-lateral displacement effects is derived.
本文推导了柱单元受大轴力和单元变形过大两种情况下的单元几何刚度矩阵。
The type of hysteresis loops can arbitrarily be chosen, and the corresponding element stiffness matrix can be built up in a simple way.
弯矩—曲率恢复力曲线可以是任意的，而相应的单元刚度矩阵的建立较为简单。
The stiffness matrix of semi-rigid steel frames and the fixed end moment are deduced, based on the connection element method incorporating the effects of joint flexibility.
采用连接单元法，考虑连接柔性的影响，推导出半刚性框架梁柱的刚度矩阵及半刚性梁的固端弯矩。
According to section stiffness matrix and available displacement mode, element stiffness matrix of elastoplastic stage was derived in this paper.
可基于截面刚度矩阵以及现有的位移模式推导出弹塑性阶段的单元刚度矩阵。
To solve the problem that the single structure stiffness matrix caused by the too big dispersion of element thickness between different levels, it proposed the adjustive method of relevant parameters.
为解决各层优化单元厚度相差太大，易造成结构刚度矩阵奇异的问题，提出对相应参数的调整方法。
In the paper authors'll derive element stiffness matrix, mass matrix and formulas for computation of inner forces.
本文将演引组合单元刚度矩阵、质量矩阵及内力计算公式。
Firstly, the links of the plane five-bar linkage mechanism is simulated by beam element, the mass matrix, stiffness matrix of linkage mechanism and elastic dynamic model of system are established.
首先对弹性五杆机构进行有限元分析，通过机构梁单元节点位移间的关系，建立起弹性五杆机构单元质量矩阵与刚度矩阵以及弹性动力学模型。
This paper introduces a finite element method of the plane trusses with elastic node. The element stiffness matrix and loading matrix are calculated in detail.
研究了弹性结点有限元方法，详细导出了弹性结点杆件的单元刚度矩阵和常见荷载列阵。
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。
And it tells us that in the calculation of thin-walled structure, displacement is better then force method, because the data in the element stiffness matrix is more simplify.
同时指出，由于单元刚度矩阵的诸元素数据简洁、计算简单，因此在薄壁构件体系的计算中，位移法比力法更具有优势。
Stiffness matrix of the model and element stiffness is provided.
推导了模型的单元刚度矩阵和各杆件的刚度。
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。
An ACN element stiffness matrix is proposed in the paper, which can be used in the analysis of both thick and thin plates without shear locking.
本文给出一个可以通用于薄板和厚板结构分析且不会出现剪切自锁的ACM单元刚度矩阵。
Elements by the highly-accuracy six-node triangular element are divided. Stiffness matrix and mass matrix of sandwich panel are established and then deduced dynamical equations of finite elements.
应用高精度的六节点三角形单元进行单元划分，建立复合夹层板的刚度矩阵、质量矩阵并推导有限元动力学方程。
The elastic stiffness matrix and the geometrical stiffness matrix for a element of cylindrical shells been established by the relation ship of strain displacement in a lange deflection.
理论上采用大挠度的应变——位移关系，建立了圆柱壳单元的弹性刚度矩阵和几何刚度矩阵。
So the form of the element stiffness matrix is analyzed, a method which may realize the real time computation of element stiffness matrix based on the BP net is proposed.
分析了单元刚度矩阵的组成，提出用BP网络来实现单刚矩阵的实时计算方法。
In the finite element simulation of foundation pit excavation, the stiffness matrix of soil, the external loads and the excavation load are changed with the increasing depth.
在对基坑开挖的有限元模拟中，土体刚度矩阵、外荷载和开挖荷载等都随开挖深度的变化而变化。
An efficient numerical method for simultaneously updating mass matrix and stiffness matrix of a finite element analytical model based on incomplete modal data measured is presented.
提出一种基于不完全模态测量数据同时修正有限元质量矩阵与刚度矩阵的有效数值方法。
The stiffness matrix of a hybrid crack-tip singular element is first derived, then by use of first-order Taylor expansion the mean and variance of stress intensity factors are formulated.
文中首先给出了杂交模式的裂纹尖端奇异单元的刚度矩阵，然后基于随机场的局部平均理论和一阶泰勒展开得到了应力强度因子均值和方差的计算公式。
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。
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。
应用推荐