本文考虑到二阶非线性项,建立起更加精密的系统模型,推导出利用状态变分计算终端干扰偏差的公式。
In this paper we consider second order nonlinear terms, set up more precise dynamic system's model and derive the computation formula of terminal perturbation deviation by state variation.
内蒙古黄河流域水土保持工程水文设计模型把水土保持工程设计中水文计算复杂繁琐的过程变的十分简捷。
The hydrologic frequency design model made the complex hydrologic computation easier in the design of soil and water conservation works in Inner Mongolian Yellow River watershed.
本文从大气的运动方程出发,利用实测的台风气压场资料和变分调整的方法,计算了进入渤海的台风风场,模拟了台风的不对称结构。
Starting from the motion equations and accepting the technique of numerical variational adjustment, this paper sets up a new model to calculate the typhoon wind field in the Bohai Sea.
提出了用变分有限元方法计算容器内液体晃动谐振频率的方法和步骤,这种方法可适用于各种形状复杂的容器内液体晃动问题。
Calculation of resonant frequencies of sloshing in a container have been achieved by FEM with calculus of variation, which is able to solve sloshing in variety complex containers.
文中根据变分公式,计算新型背腔微带贴片天线的散射场。
In this paper, we computing scattering of new-style cavity-backed microstrip patch antenna based on a variation formulation.
最大塑性功原理又称第二塑性变分原理,在致密体塑性变形分析中是运用能量法进行变形力能计算的基础。
Maximum plastic work principle is an important theorem for analyzing plastic deformation which is a foundation to calculate deformation force with energy method.
应用薄板非线性理论的变分方法求解基本方程,得到了单片碟形弹簧的载荷和变形关系以及应力分布及其计算公式。
By the variational method, the governing equation of the plate non-linear theory is solved, and he relationship between load and deformation of a single spring leaf is obtained.
本文提出了一套简单适用的四参数变分波函数,对第三周期元素正常态原子进行了系统计算。
This paper proposed a set of variational wave functions that have four parameters, and it also systematically calculated the normal state atoms for third period elements.
对于二分的结果变项我们计算相对风险以及其95%信赖区间、益一需治数。
For dichotomous outcomes we calculated a relative risk with its associated 95% confidence interval and a number needed to treat.
在变分同化的最小化过程中,计算效率无疑是最重要的,而优化步长的计算又直接关系到算法效率的成败。
During the minimizing process of variational assimilation, calculation efficiency is very important and the optimal step size greatly influences the algorithm efficiency.
基于变分原理,以土质斜坡为例,介绍斜坡潜在最危险滑动面的计算模型及解析表达式。
Taking soil slope as an example, model and analytic formula of the most dangerous sliding surface are developed according to variational principle.
在这个计算中,采用了流体——弹塑性变模量模型,使用了拉格朗日坐标有限差分方法和人造粘性,获得了冲击波、空腔和波形参数,并分析了这些参数。
In this computation a fluid-elastic plastic model and a finite difference method of Lagrange coordinate are used The parameters of shock, cavity and waveform are obtained and analysed.
本文应用分区广义变分原理,提出了求解含有裂纹的型材应力强度因子的计算方法。
A calculation method is proposed to determine the crack tip stress intensity factors for sections on the basis of zonal generalized variational principles.
费曼路径积分的变分方法是计算束缚极化子基态能的最有效方法。
The Feynman path-integral variational theory is the best way to compute the ground-state energy of bound polarons.
有限元法实质上是变分问题的一种数值解法,是物理问题的通用计算方法。
Essentially, the finite element method is a numerical technique for the variational problems, which is a general approach to physical problems.
在第二部分,我们采用第一部分所选的变分波函数和得到的束缚能进一步计算了类氢杂质体系的光致电离截面。
In the second part, using the wave function and binding energy obtained from the first part, the photoionization cross-section of the impurity is calculated.
根据日照百分率日变程曲线的变化规律,对于日照百分率大于70%的地区,建议了一种新的日照百分率计算式。
According to the daily change law from curves for percentage insolation, this paper presents a new formula of the average insolation in the zones where the insolation is more than 70%.
连铸板坯宽面鼓肚对铸坯中心偏析和裂纹有较大影响,为计算板坯宽面鼓肚,按蠕变规律,需解一个三阶微分方程,按弹塑性规律,需解一个二阶微分方程,十分费时。
In order to compute bulging of wide face of continuous cast slab, it is necessary to solve a third order differental equation for creep or a second order one for elastoplastic deformation.
由于曲面变分比曲率更适用于反映点云形体表面的性质且计算速度较快,因此该算法更适于处理点云,且具有一定的鲁棒性。
Because the surface variation is more applicable to reflect the properties of point-sample surface than curvature and faster to compute, it is more applicable to deal with point cloud and robust.
使用变分累积展开法,计算了简单立方、体心立方、面心立方格点上自旋1/2的铁磁薄膜的磁化强度和矫玩力。
Using the variational cumulant expansion, the authors examine the magnetization and coercivity for spin-1/2 ferromagnetic films of simple cubic, body-centered-cubic and face-centered-cubic lattices.
变域变分原理,可以结合可变区为功能,这使得它可以同时计算流场的变量域。
Variable-domain variational principles can couple the variable domain into functional, which makes it possible to calculate the flow field with the variable-domain simultaneously.
本文用变分方法计算了环形电场与非均匀磁场重叠场的二级离子轨迹,以能量分散形式加以表述。
The second order ion trajectories in crossed toroidal electric and inhomogeneous magnetic fields are derived by means of the Fermat's principle and expressed in energy deviation.
介绍了三维接触问题的变分原理,推导了接触问题有限元计算公式,讨论了边界接触模式和接触条件。
The variation principle of the 3-D contact problem is introduced, the related formulas based on the finite element method are derived, and the contact mode and condition of the boundary are discussed.
介绍了三维接触问题的变分原理,推导了接触问题有限元计算公式,讨论了边界接触模式和接触条件。
The variation principle of the 3-D contact problem is introduced, the related formulas based on the finite element method are derived, and the contact mode and condition of the boundary are discussed.
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