数值分析

Analysis of dynamics of nonlinear Duffing-van der Pole oscillator using versal models.

一类非线性振动系统混沌运动的数值分析。国外建材科技，2005，26(1)：55～57。

It was concluded that there are direct relationships between amplitude and initial phase in vertical orientation by numerical analysis. There are maximum and minimum of amplitude, and the way to ensure them was proposed.

经过数值分析，得出在竖直方向上激振力的幅值与初相角有直接的关系，并且幅值存在最大值和最小值，提出了最大值和最小值的确定方法。

Optimization system of reaction turbine runner based on numerical simulation of 3D viscous flow is established.

本文建立了一套基于三维粘性流数值分析的反击式水轮机转轮水力性能的优化方法。

In order to use the analytical results of three dimensional crack problem of infinite bodies and avoid the volume integral in numerical analysis.

为了充分利用三维裂纹问题的解析结果。以及避免数值分析中出现体积分。

To analyse the chaotic time sequences by computer should consider the finite word length of the computer.

借助计算机对混沌序列进行数值分析必须考虑计算机的存储字长有限这个条件。

So the braking prescription should be performed strictly, furthermore, the sudden and urgent braking should be avoided to the best of our abilities.In the end, the thermal fatigue lives were evaluated by the finite element method. It was proved that the thermal fatigue life of improved steel (ZG35CrMoRE) was higher than that of the formers. It was also found that the quantitative evaluations of the thermal fatigue lives of brake disc were acquirable, by putting the equivalent plastic strain, which was analyzed with finite element methods, and the material mechanical property parameters into the formula of Manson-Coffon to calculate its lives. Therefore, theoretical method can be provided to develop new brake disc steel and to prolong its lives.

为了进一步提高刹车鼓的使用寿命，对新试制的钢种进行了热疲劳寿命评估，验证了改进后的钢种在相同的使用工况下具有更高的热疲劳寿命；评估结果还表明利用有限元数值分析计算相应的等效塑性应变，结合材料力学性能参数，代入Manson-Coffin热疲劳寿命公式可以对刹车鼓的热疲劳寿命做出定量评估，从而为刹车鼓用钢的研制和刹车鼓寿命的提高提供了理论依据。

This paper analyses the feature of the bearing capacity and settlement of large diameter belled piles and pointed out that such piles should be designed according to the foundation settlement .

试验研究和数值分析［1，2］表明，大直径扩底桩桩端以下的地基变形和破坏模式既不同于扩展式浅基础的整体剪切破坏，也不同于常见桩基础的刺入破坏或深层剪切破坏。

Finally, considering the fact that the large diameter belled piles bear not only the vertical load but also the lateral load in engineering practice, the lateral bearing behavior of large diameter belled piles should be studied.

最后，考虑到实际工程中大直径扩底桩在主要承受竖向何载的同时还可能经常承受一定的水平荷载，建立了用于研究大直径扩底桩水平承载性状的三维数值分析模型。

When bilaminated rock mass is numerical analyzed by conventional finite element method ,that the shortcomings produced is not only the huge modeling workload and maneuverability become more inefficient with layer numbers increasing; but also the method can't reflect the bending deformation of the layered material.

采用一般有限元对互层岩体进行数值分析研究时，要求的单元数量多、建模工作量大；并且难以反映层状岩体的弯曲变形特性。

The courses in this academic program are political theory, foreign languages, applied computational technology, experimental biology, microbiology, molecular biology, genetic engineering, bioseparation engineering, bioreaction engineering, chemical thermodynamics, mass transfer, chemical process simulation, pharmacology, preparation of finished traditional Chinese medicines, pharmaceutical chemistry, GMP in pharmaceutical industry, liquid-to-liquid extraction, pharmaceutical properties measurement and quality control, pharmacy administration, etc.

研修的主要课程有：政治理论课、外语课、数值分析、计算机应用技术、现代生物学与技术实验、现代微生物学、分子生物学、基因工程、生物分离工程、生物反应工程、化工热力学、化工传递过程原理、化工过程模拟、药理学新进展、中成药的制备、药物化学的进展、制药工业的 GMP、液液萃取基础、药品性能检测与质量控制、药业管理学等。

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。