查询词典 finit element method

The finiteelements satisfied the integral condition are quasi-conforming element,generalized conforming element,and elements constructed by 2 set parametermethod,and they are equivalent in some sense,and all converge to constantstrain.

满足这种条件的有限元有拟协调元、广义协调元和双参数法构造的单元，在一定意义上它们是等价的，并都收敛到常应变。

First the FEM-BI (Finite Element – Boundary Integral Methods) base on vector element is presented to compute the electric field in the cavity backed antennas.

计算中首先采用基于矢量单元的"有限元－边界积分方程法"计算出背腔天线内部电场的分布；再采用互易原理求解天线的远区场，从而获得天线的辐射方向图。

Based on the Bernoulli-Euler beam\'s plane cross-section hypothesis under flexure and Vlasov\'s rigid contour premise under non-uniform torsion,a spatial thin-walled beam element with 2 nodes and 14 DOF is developed by independently interpolating bend angles about two prime inertial axes of cross section and warp angle with an interior node set at the midpoint of the element length and the goal is achieved.

根据Bernoulli-Euler梁弯曲变形的平截面变形假定和Vlasov约束扭转的刚周边假定，通过设置单元内部结点，对弯曲转角和翘曲角采用独立插值的方法，建立了2结点14自由度的空间梁元，实现了上述目标，并将其应用到结构的非线性分析中。

Firstly, the study of the mechanical model. The three-dimensional finite element model is established, and it is condensed into M-dof interlamination structural model. The structural dynamic analysis is implemented by use of three-dimensional finite element model and M-dof interlamination structural model.

本文通过严谨的数学推导，得出"力学不耦合"的超高层结构顺风向和尾流旋涡干扰引起的横风向振动随机响应公式，并编制了相关计算程序，深入研究了应用随机振动理论进行结构风振反应分析的方法。

Based on the triangular membrane element model, a high precision inverse approach with finite element is deduced.

以三角形膜单元为基础，推导了精度较高的有限元逆算法。

In this thesis, the results of extremal work path theory are adopted, and the FEM based on deformation theory is formulated. The Inverse Finite Element Approach in sheet metal forming is studied in detail, and an Object-Oriented Finite Element Analysis program is developed, which provides rapid and effective means for stamping process planning and die design.

本文运用极值路径理论推导出基于形变理论的有限元公式，研究了钣料成形有限元逆算法，开发了面向对象的有限元分析程序，为冲压工艺和模具设计提供了快速有效的分析手段。

This paper is generaly devided into three parts,The first prepare knowledge,introduceing some conceptions asssociated with the polynomial ring and ring of power series such as power-zero element,inverse element and primitive polynomia and so on,prepare to introduce characters of power series.

本文主要分为以下三部分：首先介绍与环、多项式环、幂级数环密切相关的一些概念，如幂零元、可逆元、本原多项式等，为接下来介绍幂级数环的定义及其性质做下铺垫；然后着重讨论了环的性质，加深对多项式环与幂级数环的理解；最后讨论了多项式的性质，并将这些性质推广到幂级数环中，这也是本文的重点所在。

Curve is the mellow element of female and the most typical element. The stylists leave their psychic idea with the sculpture of product by their illusion. The users can enjoy the show of the goods, and get the joviality of spirit.

曲线美是女性柔美的元素、最典型之元素，设计师们通过自我的幻想，把自己设计精神理念寄托在设计的产品造型上，并使得使用者在使用物品时除了享受物品外观、造型美的同时，并得到精神上的愉悦。

This is introduced in detail the takeoff and landing phase of flight operations, and then international flight safety foundation decrease in nearly landing accident research experts group to reduce the accidents in nearly landing stage of hair into nearly landing stage risk awareness, summarizes the checklist checklist five risk factors, on the basis of detailed analyses each element of each element, points out the various risk factors.

本文较为详细地推荐le起飞和降落阶段中的飞行操作，接着结合国际飞行安全基金会减少进近着陆事故研究专家工作组为减少进近着陆阶段的事故发制定的进近着陆阶段的风险意识检查单，概述了检查单中的五项风险要素，在此基础上详细分析了每项要素，指出每项要素中的各条风险因素。

The appearance of the specific levirate custom existing in the Hun and the Hsienpei Tungusic in Han and Wei dynasties is the inevitable results of the laws of geographical environment and social development. Living in the high latitudes and dry cold inland areas, plus being heavily short of virtual zinc, a trace element in soil, lead to a high death rate of child-bearing age women. In order to guarantee a normal birth-rate, the Hun and Hsienpei Tungusic had to adopt levirate to ensure healthy child-bearing age women to give birth to offspring as many as they can.2 Trace element in soil under geographical environment and the cultural process of Huang-huai-hai Plain(the Yellow River, Huai River and Hai River ) in historical period.

本文具体的研究涉及三个问题：地理环境下的土壤微量元素与匈奴、鲜卑的"收继婚"问题：我认为汉魏时期匈奴和鲜卑族中特有的"收继婚"俗的产生，是地理环境和社会发展规律相互作用的必然产物；由于匈奴、鲜卑所处纬度高、气候干燥而寒冷的内陆地区，加之土壤微量元素中严重缺乏有效锌，因而造成了育龄妇女的大量死亡，以致为了保证正常的种的繁衍，匈奴和鲜卑不得不采取"收继婚"的婚姻形式，来确保健康的育龄妇女尽可能的去生育后代。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。