Calculation of Internal Forces of Elastic Structures by Using Quadratic Boundary Element Method

1、

Mises yield condition and imitate moment yield limit with an exponent curve. Taken advantage of DKT plate element and a kind of compatible quadratic plane element including vertex rotations, an ideal shell element is formed.

Mises屈服条件，并对弯矩屈服极限用一指数曲线模拟，利用DKT板元和一种带有角点转角自由度的相容二次平面元来组成一种理想的平壳元。

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2、

In this method, the whole area is divided into many quadratic isoparametric element by means of finite element method, then the contour line in each isoparametric element is generated, thus the whole contour is assembled.

该算法根据有限元法将整个区域分割成多个互相连续的二次等参单元，通过生成每个等参单元内的等值线，进而生成整个区域内的等值线。

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3、

An Algebraic Multigrid Method of Quadratic Lagrangian Finite Element Equations Under the Unstructured Quadrilateral Grids

求解非结构四边形二次拉格朗日有限元方程的代数多重网格法

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4、

BEM with single-node quadratic element in crack analysis

裂纹分析中的单节点二次边界元

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5、

Asymptotically exact a-posteriori error estimators for the Quadratic Triangular Element in sense of point to point

二次三角形元逐点意义下渐近准确后验误差估计

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6、

Error Estimate for a Quadratic Nonconforming Finite Element on Quadrilaterals

一种二次非协调四边形有限元的误差估计

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7、

FEM using adaptive topography and quadratic element in 2D MT forward modeling heating of an insulator by a high-frequency electric field.

自适应地形电磁场双二次变化MT二维有限元数值模拟用快速变化的电磁场对非导电体加热。

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8、

The Application and Its Accuracy of Singular Quadratic Isoparametric Element

等参奇异裂纹单元的研究等参数畸变元在计算带裂纹结构应力强度因子中的应用和精度

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9、

In this thesis, we mainly study supercloseness of quadratic serendipity block finite element method for three-dimensional variable coefficient elliptic problems.

本文主要研究三维变系数椭圆方程二次奇妙族有限元方法的超逼近。

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10、

A Kind of Quadratic Superconvergence Finite Volume Element Method for One Dimensional Elliptic and Parabolic Equations

一维椭圆和抛物方程的超收敛二次有限体积元方法

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11、

Axisymmetric Isoparametric Quadratic Boundary Element Analysis of Piston Temperature Field of Diesel Engines

内燃机活塞温度场二次等参轴对称边界元分析

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12、

Quadratic Boundary Element Method and its Application

二次边界元法及应用

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13、

The correction mold of incomplete quadratic plate element

不完全双二次板元的修正型

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14、

In this paper, the efficient quadratic isoparametric boundary element and the multi-region technique were adopted to solve the macroscopic elastic modulus of a biphase medium with random order.

本文采用高效率的二次等参边界元及子域法求解了随机双相介质的宏观弹性模量。

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15、

Modeling of 3-D Vibration of Engine Crankshaft& Base on Quadratic Timoshenko Beam Element

内燃机曲轴振动特性的三维模拟&基于二次Timoshenko梁单元

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16、

Stress Analysis of Connecting Rod in Diesel Engine by Isoparametric Quadratic Boundary Element Method

柴油机连杆应力二次等参边界无数值分析

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17、

Inviscid three-dimensional extreme free surface wave motions in infinite water-depth are simulated using a novel quadratic higher-order boundary element model ( HOBEM) based on potential theory.

基于无旋、不可压的势流理论，利用高阶边界元法建立了一种可应用于无限水深的无粘三维完全非线性数值波浪水槽。

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18、

It was shown that Compared with finite element method, boundary element method is more accurate, needs less cpu time and data preparation, especially with isoparametric quadratic element.

结果表明，边界元法分析活塞温度场，不仅计算准备工作量比有限元大为减少，而且精度高、计算时间短，尤其采用二次等参元后，其优点更加突出。

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19、

The calculation of stress around the opening of a dam by the program indicates that the quadratic boundary element method has a wide range of applications with high precision.

计算实践表明：二次边界元法有广阔的应用范围及较高的计算精度，且计算准备工作简单，方便易行，程序可在水电工程中推广使用。

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20、

Numerical experiments show our AMG method is robust and efficient for solving the quadratic Lagrangian finite element system.

数值实验表明这种代数多重网格法对求解二次拉格朗日有限元方程是健壮和有效的。

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