查询词典 numerical analysis

The Predictor Corrector Primary Dual Interior Point Method is used to solve the OPF model. The effectiveness of load shedding is confirmed using the Q-V mode analysis method, which can be applied to compute eigenvalues of a reduced Jacobian matrix. The numerical results of 2 IEEE standard test systems demonstrate that the proposed OPF model is very effective since it automatically identifies the weak buses and circuits and calculates minimum load shedding.

论文采用了预测-校正原对偶内点法求解该模型，并通过Q-V模态分析研究切负荷前后系统降阶雅可比矩阵的特征值变化情况，评估切负荷控制措施的有效性。2个IEEE标准试验系统的仿真结果表明，该模型直接针对系统薄弱环节，自动辩识切负荷节点和最小切负荷量，具有很好的效果。

Based on the analysis of application of numerical control worktable, the design requirements for a virtual axis NC worktable are presented. A new three-translation and one-rotation 4-DOF parallel robot mechanism is constructed according to the design requirements and it acts as the primary mechanism of the virtual axis worktable.

在数控工作台应用分析的基础上，提出虚拟轴数控工作台的设计要求，构造一种新型3平移1转动的4自由度并联机器人机构，并将其作为虚拟轴工作台本体机构。

This dissertation establishes numerical methods in structural analysis on the basic of variation principle, finite member element method, spline function, etc.

本文利用变分有限元法、样条函数等，提出了薄壁箱梁结构分析的数值理论和方法。

Comparisons between the interval analysis method and the probability perturbation finite element method in mathematical proof and numerical examples are performed, which show the advantages of the presented method, including less prior information need on uncertain parameters and higher accuracy.

从数学证明和数值算例两方面，将其与概率摄动有限元法进行了比较，结果显示区间分析方法对不确定参数先验信息具有要求较少、精度较高的优点。关键词动力响应，非线性振动系统，区间分析方法，概率摄动有限元法，不确定参数

The numerical example shows the validipy and effectiveness in the analysis of the contact problem of tire/road interface by this approach.

轮胎 /路面的接触问题是一个强非线性问题，这决定了求解这类问题的复杂性和困难性。

On the basis of above research works, a finite element model for column of the TH6350 high speed numerical control boring was built; the stiffness of the slide guide interface between the bed and column bottom and the constrain stiffness from lead screw were estimated by using experimental formula, to guarantee the rationality of the boundary condition of the FEM model; the week link of the column has been found by application of ANSYS software to FEM model analysis of the column, The result shows that the calculation data and test data are very consistent, therefore proved the properness of the FEM model.

在上述工作基础上，本文对TH6350高速数控镗床的立柱进行了有限元建模；并利用经验公式估算了立柱与床身之间的导轨结合面上的刚度和丝杠副约束刚度，保证了有限元模型的边界条件的合理性；应用ANSYS软件进行有限元模态分析找到了立柱结构的薄弱环节，通过分析对比表明有限元分析计算与现场测试的结果相一致，证明了有限元模型的正确性，为立柱结构的进一步改进设计和优化提供了重要参考依据。

The theoretic analysis and numerical calculation of the capacitance of the electrode of capacitance proximity fuze［J］.

电容近炸引信电极电容的理论分析及数值计算［J］。

Secondly, the quadrature method was adopted to design the numerical experiments for the analysis of the factor importance.

数值试验的结果表明，网格密度对兴波阻力的结果影响是最主要的因素之一，当网格密度达到一定程度时，基于不同密度网格的计算结果是基本一致的。

According to the birefringence dispersion character of a quartz crystal,the theoretical analysis and numerical simulation about the polarization interference spectrum are given,and then a systematic way of measuring the phase retardation and thickness of the quartz wave plate ,which is based on the principle of polarization interferometry,is put forward.

根据石英晶体双折射率的色散特性，对石英波片的偏光干涉谱进行了理论分析和数值模拟，提出了一种石英波片延迟量和厚度的偏光干涉标定法。

Through the analysis of the experimental and numerical calculation values, hereinafter gives the description of the characteristics of the flow and heat transfer within the rotating blade cavity. Influenced by the inflow structure and the centrifugal force, the air flow rate on the top of the blade is bigger than that at the bottom, therefore, there exists radial component velocity which may make the buoyancy force weaken the heat transfer behavior of the blade.

通过实验和数值计算的结果的分析，发现气流在旋转叶片腔内的一些流动和换热特征：在进口流动结构影响和离心力的作用下，使得叶片顶部的气流流量大于底部的流量，因此流体存在径向分速度，可能是这种径向分速度造成浮升力对叶片的换热起降低的作用。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。