boundary element method (bem)造句
例句与造句
- To solve the three - dimensional homogeneous field region , the boundary element method ( bem ) was described in chapter 2
第二章论述了如何应用边界元数值计算方法求解三维均匀场域，并用visualc + +语言编制了相应的计算程序。 - This article uses foundation layered elastic modle which is analogy to the real project , deduces and solves the plate by boundary element method ( bem ) and summing in layers method
本文选用与实际工程场地特性较为接近的分层弹性地基模型，采用边界元法推导并求解中厚板。 - The boundary element method ( bem ) is applied to compute crack open displacement ( cod ) . because of unit area being resolved or linear integrated , the efficiency and precision of boundary element analysis are improved greatly
采用裂纹张开位移全场拟合法( gcdfp )求出裂纹面前缘的应力强度因子（ sif ） ，所得到的sif达到与所用的裂纹张开位移（ cod ）资料同样的精度。 - A convergence acceleration technique , boundary element method ( bem ) , spectrum of two - dimension solutions ( s2ds ) method are used separately in solving dyadic green function of the three domain . next , waveguide narrow - wall slots array ' s is introduced in this paper
对外部空间，与缝隙腔体区域一样认为场量与z无关，对所有场量做z方向的fourier变换，得到谱域上的一系列去耦合的二维方程。 - Under the networked pc cluster parallel computing environment , the parallel boundary element method ( bem ) used to analyze elasto - static , elasto - dynamic and elasto - plastic structure is studied in this dissertation and applied to analysis of hydraulic structure
本文主要在网络微机机群并行计算环境下，对弹性静力、弹性动力和弹塑性结构的并行边界元分析方法进行了研究，并在水工结构分析中进行了实际应用。 - It's difficult to find boundary element method (bem) in a sentence. 用boundary element method (bem)造句挺难的
- Although the boundary element method ( bem ) is recognized as the most efficient one to solve this kind of problems , the inherent conflicts between the simplicity of the method and the complexity of the practice block the large - scale application of the bem
对于这类逆热传导问题，现在公认有效的解决方法是利用边界元方法( bem ) 。许多前人在这方面的作了大量的研究工作，取得了不少的研究成果，但是也存在着不少的局限性。 - As an effective numerical analysis method of scientific and engineering problems developed following finite element method ( fem ) , boundary element method ( bem ) has some attractive advantages , such as easier simulating complex boundary shape , high accuracy and dimension reduction
边界元法是在有限元法之后发展起来的一种精确高效的工程与科学问题的数值分析方法，具有便于模拟复杂边界形状、求解精度高、降维等优点。 - In part i , based on the systematic review of the study history and prospect of nwt , the detailed process of a 2 - d nwt model developed independently is reported . the two key discretization methods , boundary element method ( bem ) and mixed eular - langurange ( mel ) method , are introduced in detail , and an integrated flow chart of the detailed time - domain simulation steps of nwt is presented
第一部分在回顾数值波浪水槽发展历程、现状及其应用前景的基础上，重点报告本人独立开发二维非线性数值波浪水槽模式的研究工作，其中包括构建数值波浪水槽的运行原理和具体步骤等全过程。 - 2 . using a new method , virtual boundary element method ( vbem ) to electromagnetic calculating . this method , same as boundary element method ( bem ) , need not analysis all the field area , and need not specially deal with no closed in boundaries . future more , vbem has advantage in calculating speed , and can avoid singularity integrating being predestined in bem
2 .使用了一种新方法,虚边界元方法用于强流电子枪电子轨迹的模拟,这种方法与边界元法一样不须要对所有场域进行计算,对于不封闭场域不须要做特殊处理,从而避免了有限元法和有限差分法的方法缺陷,它具有计算速度快的优势,且不存在边界元法所不可避免的奇异积分。 - In this dissertation , the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory , method and the application technique , based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem . the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced , based on the wave propagation theorem ; the arising of the non - unique solutions , which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem , is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples
第二章在声波动理论基础上，详细地推导出对应于无限域和半无限域的外部振动声辐射问题的边界积分方程计算公式；根据fredholm积分理论，对利用边界积分方程计算振动声辐射问题过程中解的非唯一性的产生进行了分析和证明；改进了chief法以提高其克服解的非唯一性的有效性和可靠性；对不同条件下奇性系数的计算、强奇性积分的收敛性及其在变量替换时与普通积分的差异性、不同阶奇性积分的计算、数值求积分等进行了研究；开发了三次样条改进chief法计算软件，并通过算例考核了该方法在特征波数处克服解的非唯一性的有效性和在保证计算精度的前提下实现剖分粗化以提高计算效率的可行性。 - Based on some discussions on the mathematic model set up for the cathodic protection potential field , a two - dimensional boundary element method ( bem ) is developed , and by using which , a study on the shielding effect resulted from some typical inner structures such as the reinforcing elements and the partition walls with man holes on distribution of potential and current density in the cathodic protection is performed . the investigated parameters which affect the shielding effect in the calculating model include : the height and thickness of the reinforcing elements , the distance between the anode and the reinforcing elements , and the diameter of man hole on the partition walls , and so on
本文在讨论了阴极保护电位场问题的数学模型的基础上，以二维边界元法对阴极保护问题中的电位及电流密度分布进行了模拟计算，重点对船舶压载舱中的典型结构如加强筋、人孔等在阴极保护中所产生的屏蔽效应进行了分析和研究，通过对不同高度、厚度的挡板及不同孔径的带孔板所产生的屏蔽效应进行模拟计算，首次得到了一些对实际工程设计具有重要参考意义的见解。 - Abstract : the slope dynamic stability with elasto - dynamics vibration and wave theory and boundary element method ( bem ) is analyzed and calculated . it raises a criterion for slope dynamic stability . it gives an exmple for calculating the stability of soil slope under the action of earthquake waves emitted from underground and draws the dangerous range in which the slip line lies
文摘:主要分析边坡动态稳定性问题，采用地震波作动载荷，用边界元法对边坡进行分析，并在计算机上实现.对动态稳定性判据从理论上进行了探讨，给出了动力危险线的位置 - ( 3 ) uniformed contours stacked together and constructed real boundary element method ( bem ) calculation models for e / meg research respectively by minimum distance method and 3d - delaunary based triangulation growth method . finally developed visualization algorithm based on surface rendering for the purpose of integration of structure and function information
在构建剖分模型上，用基于最短对角线(在两层轮廓中心偏离较大的情况下，对轮廓进行了对中变换)和基于3ddelaunay的方法构建了计算模型；基于表面绘制的思想，实现了头和脑的可视化。 - There are three main approaches to predict the noise level : similitude structure method including the frequency - response method and proportion method , modal method including finite element method ( fem ) and boundary element method ( bem ) , and statistical energy analysis ( sea ) . the advantage of similitude structure method is to give the predicting data fast , but it has some error because of dealing with rough similitude parameter and mass load
目前对噪声预示主要有三个方法：一是相似结构外推法，包括频率响应法和比例法等；二是传统的模态方法，包括有限单元方法( finiteelementmethod , fem ) 、边界单元方法( boundaryelementmethod , bem )等；三是统计能量分析方法( statisticalenergyanalysis , sea ) 。