boundary element method (bem)造句
例句與造句
- To solve the three - dimensional homogeneous field region , the boundary element method ( bem ) was described in chapter 2
第二章論述了如何應(yīng)用邊界元數(shù)值計(jì)算方法求解三維均勻場(chǎng)域，并用visualc + +語言編制了相應(yīng)的計(jì)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
本文選用與實(shí)際工程場(chǎng)地特性較為接近的分層彈性地基模型，采用邊界元法推導(dǎo)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
采用裂紋張開位移全場(chǎng)擬合法( gcdfp )求出裂紋面前緣的應(yīng)力強(qiáng)度因子（ sif ） ，所得到的sif達(dá)到與所用的裂紋張開位移（ cod ）資料同樣的精度。 - 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
對(duì)外部空間，與縫隙腔體區(qū)域一樣認(rèn)為場(chǎng)量與z無關(guān)，對(duì)所有場(chǎng)量做z方向的fourier變換，得到譜域上的一系列去耦合的二維方程。 - 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
本文主要在網(wǎng)絡(luò)微機(jī)機(jī)群并行計(jì)算環(huán)境下，對(duì)彈性靜力、彈性動(dòng)力和彈塑性結(jié)構(gòu)的并行邊界元分析方法進(jìn)行了研究，并在水工結(jié)構(gòu)分析中進(jìn)行了實(shí)際應(yīng)用。 - It's difficult to find boundary element method (bem) in a sentence. 用boundary element method (bem)造句挺難的
- 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
對(duì)于這類逆熱傳導(dǎo)問題，現(xiàn)在公認(rèn)有效的解決方法是利用邊界元方法( bem ) 。許多前人在這方面的作了大量的研究工作，取得了不少的研究成果，但是也存在著不少的局限性。 - 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
邊界元法是在有限元法之后發(fā)展起來的一種精確高效的工程與科學(xué)問題的數(shù)值分析方法，具有便于模擬復(fù)雜邊界形狀、求解精度高、降維等優(yōu)點(diǎn)。 - 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
第一部分在回顧數(shù)值波浪水槽發(fā)展歷程、現(xiàn)狀及其應(yīng)用前景的基礎(chǔ)上，重點(diǎn)報(bào)告本人獨(dú)立開發(fā)二維非線性數(shù)值波浪水槽模式的研究工作，其中包括構(gòu)建數(shù)值波浪水槽的運(yùn)行原理和具體步驟等全過程。 - 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 .使用了一種新方法,虛邊界元方法用于強(qiáng)流電子槍電子軌跡的模擬,這種方法與邊界元法一樣不須要對(duì)所有場(chǎng)域進(jìn)行計(jì)算,對(duì)于不封閉場(chǎng)域不須要做特殊處理,從而避免了有限元法和有限差分法的方法缺陷,它具有計(jì)算速度快的優(yōu)勢(shì),且不存在邊界元法所不可避免的奇異積分。 - 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
第二章在聲波動(dòng)理論基礎(chǔ)上，詳細(xì)地推導(dǎo)出對(duì)應(yīng)于無限域和半無限域的外部振動(dòng)聲輻射問題的邊界積分方程計(jì)算公式；根據(jù)fredholm積分理論，對(duì)利用邊界積分方程計(jì)算振動(dòng)聲輻射問題過程中解的非唯一性的產(chǎn)生進(jìn)行了分析和證明；改進(jìn)了chief法以提高其克服解的非唯一性的有效性和可靠性；對(duì)不同條件下奇性系數(shù)的計(jì)算、強(qiáng)奇性積分的收斂性及其在變量替換時(shí)與普通積分的差異性、不同階奇性積分的計(jì)算、數(shù)值求積分等進(jìn)行了研究；開發(fā)了三次樣條改進(jìn)chief法計(jì)算軟件，并通過算例考核了該方法在特征波數(shù)處克服解的非唯一性的有效性和在保證計(jì)算精度的前提下實(shí)現(xiàn)剖分粗化以提高計(jì)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
本文在討論了陰極保護(hù)電位場(chǎng)問題的數(shù)學(xué)模型的基礎(chǔ)上，以二維邊界元法對(duì)陰極保護(hù)問題中的電位及電流密度分布進(jìn)行了模擬計(jì)算，重點(diǎn)對(duì)船舶壓載艙中的典型結(jié)構(gòu)如加強(qiáng)筋、人孔等在陰極保護(hù)中所產(chǎn)生的屏蔽效應(yīng)進(jìn)行了分析和研究，通過對(duì)不同高度、厚度的擋板及不同孔徑的帶孔板所產(chǎn)生的屏蔽效應(yīng)進(jìn)行模擬計(jì)算，首次得到了一些對(duì)實(shí)際工程設(shè)計(jì)具有重要參考意義的見解。 - 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:主要分析邊坡動(dòng)態(tài)穩(wěn)定性問題，采用地震波作動(dòng)載荷，用邊界元法對(duì)邊坡進(jìn)行分析，并在計(jì)算機(jī)上實(shí)現(xiàn).對(duì)動(dòng)態(tài)穩(wěn)定性判據(jù)從理論上進(jìn)行了探討，給出了動(dòng)力危險(xiǎn)線的位置 - ( 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
在構(gòu)建剖分模型上，用基于最短對(duì)角線(在兩層輪廓中心偏離較大的情況下，對(duì)輪廓進(jìn)行了對(duì)中變換)和基于3ddelaunay的方法構(gòu)建了計(jì)算模型；基于表面繪制的思想，實(shí)現(xiàn)了頭和腦的可視化。 - 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
目前對(duì)噪聲預(yù)示主要有三個(gè)方法：一是相似結(jié)構(gòu)外推法，包括頻率響應(yīng)法和比例法等；二是傳統(tǒng)的模態(tài)方法，包括有限單元方法( finiteelementmethod , fem ) 、邊界單元方法( boundaryelementmethod , bem )等；三是統(tǒng)計(jì)能量分析方法( statisticalenergyanalysis , sea ) 。