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A penalty function method of finite element was proposed for nonlinear contact stiffness of joint.

提出了一种在有限元分析中用罚函数法分析结合部非线性接触刚度的方法。

Finite element method ; influence function method ; mill stiffness

有限元；影响函数法；轧机刚度

By combining the interval mathematics and the finite element analysis, the mass matrix, damping matrix, stiffness matrix and the external loads are represented as interval matrices and vector.

通过结合区间数学和有限元分析，结构质量矩阵、阻尼矩阵、刚度矩阵和外载荷列向量采用区间矩阵和区间向量来描述。

It could solve the problem that it was difficult to perform accurate analysis of stiffness and strength of a shell plastic part due to finite element simulations with many theoretical assumptions and boundary conditions.

解决了以往由于有限元模拟时存在的很多理论假设和边界条件而难以对壳体塑件的刚度及强度进行准确分析的问题。

In the fifth part, the finite element method with sliding cable element was adopted to the prestress producing of the cable dome as well, and the computer methods and steps of the initial stiffness were established. The relevant program was worked out and was used in one example.

将本文提出的滑移单元有限元方法应用于索穹顶结构的预应力生成，并建立了初始刚度生成计算模式和步骤，编制了相应的计算程序，进行了实例计算，结果表明，本文提出的滑移单元有限元理论用于索穹顶结构的预应力生成是合理可行的，其精度已足以满足实际工程要求。

For some shortcomings of unknown quantity numbers in finite element method, QR-method establishes a transformed relationship between a unit node displacement vector and the entire framework of spline node displacement vector,making the structure of the total stiffness matrix, damping matrix, mass matrix directly superimposed in no need of finite element method in the first expansion after the superposition process. So the method greatly simplifies the calculation process and improves computing speed.

针对有限单元法中未知量数目很多的缺点，QR法建立起单元结点位移向量与整个框架样条结点位移向量的转化关系，使得结构总刚度矩阵、阻尼矩阵、质量矩阵可以直接叠加，不需要有限单元法中先扩张后叠加的手续，大大简化了计算过程，提高计算速度。

This study first analyzes boundary condition of single column member and adopts relative joint bending stiffness ratio of AISC to find the effective length factor. For that a structural joint or connection is neither full rigid nor full hinge in practice, this study uses this concept to establish the semi-rigid joint model. This study then discusses the structural behaviors of tapered members results with those from and compares these previous studies.

本文先对於单一柱构件之边界条件进行分析，采用AISC规范求取有效长度系数之G值控制梁柱相对劲度，同时考虑一般实务上结构接合并非完全刚性或完全铰接，模拟介於两者间之半刚性接合，藉由模拟结果进一步探讨非均匀构架之结构行为，并与前人之研究相关成果比较。

In chapter 3, on basis of the first order shear deformation theory, a series of composite laminated beam elements are developed, which are plied transversely, longitudinally and/or assembled both, respectively. A geometric nonlinear element stiffness matrix for the transversely plied laminated beam is presented.

第三章首先介绍了目前已有的在小变形下的横向层合梁、纵向层合梁和组合层合梁理论，并推导了其相应的有限元列式，然后又基于Von-Karman大挠度理论的几何关系，推导了大变形下横向层合梁的单元切线刚度阵。

In chapter 2, a tangent stiffness matrix formula of four-node C〓 element for the laminated plate is deduced, which is based on the first order shear deformation theory and the Von-Karman nonlinear deformation assumption.

第二章首先给出了在一阶剪切效应和Von-Karman大挠度理论下复合材料层合板的几何关系，然后基于单元域内和边界一致概念，推导了在大变形下"无剪切闭锁"的层合板单元切线刚度阵，并给出了复合材料层合板后屈曲分析的有限元平衡方程。

Further, the stiffness matrix and force vector in this model are derived to build a mathematical model for simulation.

论述了Windows2000/XP环境下，结合面向对象技术和MATLAB接口技术，开发摆线针轮行星齿轮减速机构的回转传动精度仿真系统的方法。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。