The high-order boundary conditions for the problems of Laplace equation in infinite region hare been developed. 对无限域Laplace方程问题,推导出了高阶边界条件。
Scattering of SH waves from a circular inclusion in an infinite strip region 带形域内圆柱形夹杂对SH型导波的散射
The entire existence of initial value solution of the ode equation in half closed infinite region 半闭无界域上ODE方程初值解的整体存在性
The author believes in that the increase of damping can not completely inhibit the infinite growth of amplitude due to the presence of continuous excitation site in the region of dynamic instability in this thin walled member. 指出由于薄壁杆件的动力不稳定区域具有连续的激发区域,阻尼的增加并不能绝对地抑制振幅无限增长。
This paper adopts the contact element to consider the dislocated slippage and tensile crack, and uses the infinite element to reflect the far field effect of the groundsill infinite region more efficiently. 采用无限元更有效地反映地基无限域的远场效应;
We adopted here the high accuracy method of using the expansions in orthogonal functions along the normal direction and the effective algebraic mapping to deal with the problem in the infinite region. 采用高精度的高阶谱方法及其对无限区域问题的有效代数变换,提高了计算精度和收敛速度。
Solution to the one-dimensional problems in half-infinite region 一维半无界空间问题的解题分析
On the basis of field expression in half infinite homogeneous medium space, this paper discusses the basic properties of full region apparent resistivity for data acquired with center loop line transient electromagnetic method and their solving method. 根据半无限均匀介质空间中场的表达式,分析了一维层状介质情况下的中心回线方式瞬变电磁测深法的全区视电阻率定义的基本性质,并讨论了求解方法。
When solving electromagnetic ( EM) scattering problems with the FEM, the infinite region exterior to the scatter must be truncated by a fictitious boundary. 在开域电磁散射问题中,有限元需要虚拟边界以截断无限大空间。
By using the complex function methed, a complete closed soution of the stree and displacement fields are obtained in this paper for two infinite strips of different materials perfectly bound with each other in a finite region. 本文采用复变函数解法,给出不同材质二无限长板条在有限段内理想粘结时应力场、位移场的全场封闭解。
The problem of simulation of infinite region is always met in civil engineering, hydraulic engineering, geotechnical engineering and ocean engineering. 在土木工程、水利工程、岩土工程及海洋工程中常常会遇到涉及无限域的模拟问题。
Put forward and testified the transformation relations between infinite region boundary conditions-infinite region in-situ horizontal stress conditions on the square body with circle hole and on the hollow cylinder. 提出并推导证明了远场力学边界条件远场水平地应力边界条件,在有限元模型中心有圆孔方形体和空心圆柱体几何模型边界力学条件的转化关系。
A Green's Function for Potential Flow Problem in an Infinite Strip Region and Its Applications to Coupled Vibration 无限长带形域流场的格林函数及其在耦振中的应用
Boundary Element Method of Poisson's Equation in Infinite Bar Region with a Hole 在带形有孔无限域中Poisson方程的边界元法
This paper focuses on the discussion about the transformation of the field graph of the infinite region into the finite equivalent field graph. 本文的重点就是将此无限域的场图变换为有限的等效场图。
In this paper, we have given an analytic excitation solution of exploding wave in infinite elastic medium with growing spherical inner boundary and the cover-gence region of series in this solution determined. 本文给出了含扩展球腔无穷大弹性体中爆炸波的激发问题分析解,并给出了解的收敛范围。
Infinite element method is a relatively simple and practical method in simulating infinite region among numeric methods. 无限元法是目前数值方法中较为简便、实用的模拟无限域的方法。
Inertia forces, fluid-soil coupling and soil-pipe interaction were considered in the finite-element dynamic equations derived using the Galerkin discrete method and Newmark-β method in the governing equations. An Absorbing boundary condition was introduced to simulate horizontal infinite soil region by finite elements. 考虑了惯性力以及水土耦合作用、管土相互作用的影响,对控制方程采用标准Galerkin离散法和Newmark-β法建立有限元动力方程,并引入传输边界条件来模拟土体水平方向的无限性。
Like in an infinite flow, we find that laminar boundary layer, transition region and turbulent boundary layer also exist along a flat plate in open channel flow boundary layers. 试验研究发现明流光滑平板边界层中,与无限边界绕流平板边界层一样,沿平板有层流边界层,转捩区和紊流边界层三部分。
The numerical techniques developed here, including the high accuracy method of using expansions in orthogonal functions in normal direction and the effective algebraic mapping to deal with the problem of infinite region, can raise the calculation precision and the convergence velocity greatly. 文中所发展的方法,如,在法向上采用高精度的高阶谱方法和对无限区域数值问题的更为有效的代数变换处理等,提高了计算精度和收敛速度;
Antiplane Multiple Elliptical Holes and Multiple Cracks Problem of Infinite Region 无限域多椭圆孔多裂纹反平面问题
( c) The semi-infinite crack propagating in infinite region with the fiber bridging traction action is equal to the semi-infinite crack propagating in strip. 受桥联纤维力作用的半无限长裂纹在无限域中扩展等效于半无限长裂纹在带域中扩展。
Northeast frontier contain infinite vitality, nature also provides a rich to exile literati materials, in the northeast region of the grand and magnificent rivers give shed tremendous strength, this is also the hope of life and to praise. 东北边疆蕴藏着无限生机,大自然也给流放文人提供了丰富的素材,东北地区雄伟、壮阔的山河给予流人巨大的力量,这也是对生命的希望和赞美。
Major works are as follows: 1. Physical and mathematical models of temperature field before the leakage of the thermal pipeline are provided, and the infinite region of soil is simplified to finite region. 2. 主要工作如下:1、建立管道泄漏前土壤温度场的物理和数学模型,将土壤这一半无限大区域简化为有界的区域。