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In order to analyse the structural reliability by stochastic finite element method rapidly and efficiently, a method combined with finite element method and gradient optimum algorithm based on ANSYS is presented when referring to the geometric interpretation of structural reliability index.

为快速、高效地进行基于随机有限元法的结构可靠度分析，从结构可靠性指标的几何意义出发，提出了在ANSYS平台上采用有限元法和梯度优化算法相结合的方法进行可靠度分析的构想，对ANSYS进行二次开发实现了该方法。

According to the nonlinear finite element theory, the basic principle of the finite element method about geometrical nonlinearity and material nonlinearity is analyzed.

依据虚功原理和增量理论，研究了与几何非线性和材料非线性相关的有限元基本理论，并将其引入张弦梁的非线性力学分析中，建立该结构的非线性有限元分析理论和计算方法。

The spectral element method, which combines the high-order precision of spectral methods and the geometrical flexibility of finite element methods, has achieved great success and is becoming a useful tool for investigation of such equations.

谱元法作为一种高阶的数值方法，结合了谱方法的高精度和有限元法灵活的网格剖分技术，在不可压流体的计算中已取得了很大的成功，并正成为计算随机微分方程的一个有力工具。

In this paper, based on natural characteristic of Cable-Arch structure, Ansys FEM program was used to simulate its geometrical nonlinear behavior with beam element and cable element.

本文针对索—拱结构利用ANSYS有限元程序将这种结构离散为梁元和索元，对其进行非线性分析。

Based on geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.

根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。

Based on the geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.

本文根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。

Objective: The purpose of this study is to develop a systemic and geometrical detailed three-dimensional finite element model based on the healthy human foot and investigate the foot inner biomechanical properties during balanced standing using a static finite element analysis.

目的：建立一个基于健康人体的、系统的、具有高度几何相似性的足部三维有限元模型，并用此模型静态地分析人体双足站立相时的足部内部的生物力学特性，量化足部内部的应力/应变状况、足部内侧纵弓变化等。

With analyzing structure features of sheet metal parts, the geometrical information model is built on the basis of the hierarchy of structure feature, structure element and geometrical element.

2分析了钣金零件的结构特征构成，建立了"结构特征—结构要素—几何要素"的三层几何信息模型，并采用树结构组织模型几何数据，分别给出了框肋零件、整体壁板零件和蒙皮零件的几何信息模型；分析了状态衍化中的结构要素变化类型和成形工序对结构要素变化的影响，采用加权图描述了状态衍化中结构树的变化；对应零件几何信息层次构成，建立了钣金零件结构特征的XML模式，分别举例说明了各层几何信息的XML表达，形成了基于XML的钣金零件数据表达方法。

In the text, the Spectral element method is used to model the seismic wave propagation, which is based on a weak formulation of the elastic mechanics equation. It combines the geometrical flexibility of the Finite element method and the accuracy of the pseudospectral method.

本文采用谱元法对横向同性介质中的地震波进行模拟，该方法基于弹性力学方程弱形式基础之上，具有有限元适应任意复杂介质模型的韧性和伪谱法的精度。

The 4-node plane element model with geometrical nonlinearity is de rived by assuming uniform stress distribution on each faces of the element .

在假设平面单元每一个边上的力为均匀分布的条件下，推导出一种几何非线性平面4节点有限元模型。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。