The method is generally less precise than refined methods of numerical analysis . 這種方法不如精細的數(shù)值分析法來的精確。
The stability of surrounding rock of xiangjiaba hydro - power station ' s underground powerhouses is demonstrated by the method of three - dimensional elastic and plastic damage elements 摘要采用三維彈塑性損傷有限元數(shù)值分析法對向家壩地下廠房洞群圍巖穩(wěn)定性進行了分析論證。
2 . the analytical pressure distribution of ultrasonic phased array for the beam focusing was obtained using the huygen s principle , by use of computer software , the pressure distribution was plotted . 3 根據(jù)相控陣的延時聚焦原理,推出了相控陣的聲壓分布表達式,采用數(shù)值分析法,利用計算機軟件畫出了聲壓分布圖。
3 . the analytical pressure distribution of ultrasonic phased array for the beam focusing was obtained using the huygen s principle , by use of computer software , the pressure distribution was plotted . ( 3 ) 根據(jù)相控陣的延時聚焦原理,推出了相控陣的聲壓分布表達式,采用數(shù)值分析法,利用計算機軟件畫出了聲壓分布圖。
4 . this thesis uses finite element method , and by selecting 3 - dimension eight nodes element , and takes advantage of ansys to stimulate the different main girders to verify the accuracy of theoretical methods above 數(shù)值分析法:本文利用大型有限元程序ansys ,選用八節(jié)點實體單元,分別對以上三種截面形式主梁進行模擬,以比較理論計算結(jié)果的準確性。
With the rapid development both of computer and calculating techniques , numerical analysis become more emphatic , especially , researchers always focus on analog electromagnetic fields by using finite element method in the design electric products and optimize the products 隨著計算機和計算技術(shù)的飛速發(fā)展,數(shù)值分析法受到越來越普遍的重視,特別是在電氣產(chǎn)品的設(shè)計和優(yōu)化中,采用有限元法對電磁場的模擬一直是研究者關(guān)注的問題。
This paper study the jinjiang landslide , integrative application of geological history genetic analysis , limiting equilibrium method and numerical analysis , by analyzing physical geography condition and geological background of the investigated area , this paper researched basic features and genetic mechanism about the landslide , and evaluated sensitivity factors and the current stability as well as development tendency about the landslide ' s stability ; based on these , recurring to experience formula and correlation theory , this paper forecasted the events about landslide damming of river and surge caused by the slope failure , in addition , and evaluated the harmfulness 本文以該滑坡為研究對象,綜合運用地質(zhì)歷史成因法、極限平衡方法及數(shù)值分析法等方法,通過對研究區(qū)自然地理及地質(zhì)背景的分析,研究了滑坡的基本特征及成因機制,評價了影響滑坡穩(wěn)定性的敏感性因素及其發(fā)展演變狀況;在此基礎(chǔ)上,運用經(jīng)驗公式以及相關(guān)理論計算對滑坡失穩(wěn)可能引起的堵江及涌浪事件進行分析預(yù)測,并進一步對其危害性做出評估。
Modern logistics system simulate optimization this thesis in theory aspect , establish the mathematics model and bring up the calculate way using heuristics method to optimize the right conveyance problem in the simulative logistics system ; solution logistics the center choose problem , make use of the number analysis the method ( center of gravity method ) to proceed the optimization design solution to calculate ; the thesis furthest extrude put great emphasis on the logistics system production total cost had bigness affect and difficult to control over the problem of the manufacture and stock quantity make use of the matlab to bring up the simulative optimization design project separately with simple optimization algorithm and simplex method algorithm 現(xiàn)代物流系統(tǒng)仿真優(yōu)化論文在理論方面,用物流系統(tǒng)仿真對運輸優(yōu)化問題運用啟發(fā)式方法建立數(shù)學(xué)模型、提出算法;在解決物流中心選址問題時,利用數(shù)值分析法(重心法)進行優(yōu)化設(shè)計解算。本文最為突出的是運用簡單尋優(yōu)技術(shù)的單純形法利用matlab就物流系統(tǒng)中對總成本有巨大影響并難以控制的生產(chǎn)和庫存數(shù)量問題提出可行的仿真優(yōu)化設(shè)計方案。