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1.In accordance with the inadequate feature describing ability of the conventional adaptive finite element mesh generating method, a feature-based adaptive finite element mesh generating method is proposed in the present paper.
摘要针对常规自适应有限元网格生成方法对分析对象的特征描述能力不足，提出了基于特征的自适应有限元网格生成方法。收藏指正
2.Unstructured adaptive finite element mesh generation method based on Advancing Front Technique (AFT) is studied in this thesis.
本文研究、改进和实现了非结构化自适应有限元网格自动生成的AFT方法(Advancing Front Technique)。收藏指正
3.So how to generate adaptive finite element mesh that can reflect physical and geometric characteristics of the structure is a necessary step to apply AFEA.
生成反映结构物理特征和几何特征的自适应有限元网格是应用自适应有限单元法的必要环节。收藏指正
4.With this method, a feature control-based adaptive finite element mesh, by feature definition, search of feature point, line and region, the feature-based mesh density control can be realized.
通过特征定义及特征点、线、域搜索，可实现基于特征控制的自适应有限元网格密度分布。收藏指正
5.A more complete physical model of the device is adopted,and the sparse matrix technique of symbol Lu factorization,the self-adaptive finite element mesh refinement technique aed the modified nonlinear iteration technique are used in the numerical method. Thereby the speed of device analysis is increased con siderably.
它采用了较完全的器件物理模型,同时在数值方法上采用了符号Lu分解的稀疏矩阵技术,有限元网格的自适应剖分技术及改进的非线性迭代技术,使器件分析的速度显著提高。收藏指正
6.Then a practical posteriori error estimates formula for the adaptive boundary element method solving the acoustic scattering problem with a finite plane screen is obtained by triangulations. The mathematical model of this problem is the three dimensional Neumann boundary value problem of Helmholtz equation with finite plane boundary.
然后 ,对以有限平面为屏蔽物的声散射问题 (其数学模型是三维 Helmholtz方程以有限平面为边界的 Neumann问题 )在三角剖分下给出了其自适应边界元解法的后验误差估计的具体表达式收藏指正
7.Bv using multiple model adaptive control,multiple element models were utilized to cover the uncertainty of the controlled system,and multiple controllers were set up according to multiple element models.
多模型自适应控制利用多个元素模型覆盖被控对象的不确定性,并针对这多个元素模型建立多个稳定的控制器。收藏指正
8.Appropriate modes were selected to act on the special areas according to geometric and physical features of the object to be analyzed. As a result,an information field of element size was built in manner of project. Algorithm based on Delaunay triangulation was developed for 2D finite element adaptive mesh generation,in which element size is changed dynamically.
在设计基准点、沿指定曲线等网格加密生成方式的基础上,根据二维区域几何特征和分析对象物理特性估计,通过选择合适的网格加密生成方式,作用于分析对象上,规划构造有限元自适应网格单元尺寸信息场,进而提出基于De launay剖分的动态节点-单元一体化算法,实现几何特征和物理特性整体自适应的有限元网格自动生成。收藏指正
9.Adaptive finite clement mesh generation is a strategy to optimize finite element mesh in line with er-ror estimation.
自适应有限元网格生成是基于误差估计,自动进行有限元网格优化的一种策略。收藏指正
10.Thereceiver with AAA (adaptive Array Antenna) can differentiate signals from each otherby their different spatial signature. Besides, the receiver can get diversity gain frommore than one element, so as to be helpful to improve the quality of communications.
前端采用自适应阵列天线的小卫星通信接收机，可通过一定的信号处理，从空间上区分信号和干扰，并且多个阵元还可获得分集增益，从而改善通信质量。收藏指正
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