查询词典 numerical method

Based on the method of numerical simulation, the diameter of steel billet, entrance half angle of concave die and the dimension of spline were analyzed for the forming force on the spline processing with the help of a rigid-plasticity finite element software Deform 3D.

借助刚塑性有限元软件Deform-3D，采用数值模拟的方法分析了矩形花键轴冷挤压过程中，坯料直径、凹模入模半角及键齿尺寸对花键成形力的影响。

Through these tests we understand the rule of stress state and fracture regularities of the orifice structure before and after cracking of concrete and obtain a large number of test data They provide basis for establishing numerical model and design method.

通过试验，得到了孔口结构在混凝土开裂前后的受力状态和破坏规律，为建立数值模型和配筋方法提供了依据。

Then, by iSIGHT, experiment designs are redesigned of 40 kinds of different ""V-type"" folded core. Based on the above, a surrogate models are built for thermal conductibility performance of sandwich panel with ""V-type"" folded core in this paper, and they can be optimized by multi-subject. The numerical simulation function and optimization design method in condition of lightest weight are shown in this paper.

其次，用iSIGHT软件重新设计了40组不同构型的试验设计点，并以此为基础对V型褶皱芯材夹层板的热传导性能构建了可用的代理模型，给出了数值模拟函数和最轻重量条件下的优化设计方法。

This semi-analytical method is more accurate then the numerical methods. And it overcome the disadvantage of analysis methods such as conformal mapping, the position of cracks can be random.

此方法属于一种半解析半数值的方法，由于充分利用了解析的结果，因而具有比较高的精度，同时又克服了保角变换等解析法的局限，各裂纹位置可以是任意的。

The numerical experiments shows that the algorithm is much more efficient than the general genetic algorithm and conjugate gradient method.

算例结果表明，该算法对于病态方程组的求解效果明显优于一般的遗传算法和共轭梯度法。

At the end of every section, numerical examples are given to illustrate the more effectiveness and less conservativeness of the proposed method.

通过LMI工具箱，我们能很容易的得到时滞的最大上界。在每一节的最后都有例子来说明本方法的优越性。

The structure feature of the sensor was described in comparison with the classical Stewart platform-based six-component force sensor.By using the finite element method,the elastic dynamics theoretical model of the sensor was established based on the conditions of displacement consistency and force balance.According to this model,the numerical analysis was carried out,and the variety relationship curves between the natural frequencies and the structural parameters are plotted.

描述了该传感器相对于经典Stewart平台六维力传感器所具有的结构特点；利用有限元法，采用位移协调和力平衡条件建立了传感器弹性动力学理论模型，依此模型进行数值分析，绘制了固有频率与各结构参数间变化关系曲线；并利用ANSYS软件建立了传感器有限元模型，进行了振动模态分析，得到其固有频率和振型。

After a power spectrum is constructed, empirical wavelet coefficients are used to detect the jump points in the function to obtain the strong consistent estimator of the position and number of the frequencies. Numerical simulations show this method is reliable.

根据它们的协方差函数可以表示为一个Fourier级数，而其Fourier系数可通过协方差函数的逆变换得到的特性，我们对于零均值的近周期相关序列构造了类似于周期图的函数，并构造其经验小波系数，利用频率处于此函数的尖点的特性，以及此性质在经验小波系数中的反映，来确定频率的个数和位置，所有的估计量都是强相合的，此外，数值模拟的结果表明，我们的方法是有效的。

Based on the equilibrium equation of an arch element the cubic nonlinear dynamic model with second order is established and the nonlinear differential dynamic system without constant term is obtained through a transfer process of T=U+b. Hence three fixed points and the homoclinic orbits are found. The critical condition of the chaotic vibration of the elastic arch is given by using the method of Melnikov function. The numerical results of the stationary and chaotic motion are given and discussed.

首先利用拱的单元平衡方程建立了拱的二阶三次非线性动力学模型；然后通过变换使方程转化为不含常数项的非线性微分动力系统，并由此得到无扰动系统的3个不动点与同宿轨道；再用Melnikov函数法给出了发生混沌的临界条件；最后给出了该系统出现定常运动和混沌运动的数值结果。

The results of in-situ test are in good agreement with numerical simulation and it show that this method can successfully be applied to the identification and diagnosis of structural damage with the consummately trained wavelet neural network as an intelligentzed classifier.

仿真模拟试验显示了该方法的合理性，结果表明训练成功的神经网络可以作为智能分类器对框架结构损伤进行有效的识别和诊断。

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。