虛載荷 的英文怎麼說
中文拼音 [xūzǎihé]
虛載荷
英文
dummy load-
Fist of all, on the basis of the research of agone boffins, this author investigates the interaction mechanism of bolts and rock, and introduces the elastic ? lastic analytical resolution which is consist of the liner structure, the equivalent reinforced wall rock and the original wall rock in the simple loading from the equivalent well - proportioned view ; this solution is very important meaning for the engineering design. on the basis of coulomb friction model, the author introduces the finite element equation of the contact problem in order to provide the academic foundation for the application of msc. marc. finally, combining the engineering practice of the non - linear analysis of shield tunnel through yellow river of the south - north water transfer and using the model of friction, the author researched the evolution law of stress and displacement field in the structure of grouted rock bolts, and analyzed the effect to the stress and deformation of surrounding rock mass due to anchor supports
首先，在前人研究成果的基礎上，對錨桿與圍巖的相互作用機理進行研究，利用全長錨固錨桿的中性點理論，從等效均化的角度來考慮錨桿對圍巖的加固作用，並推導了在簡單荷載作用下，含有襯砌、等效加固后的圍巖、原始圍巖三者的彈塑性解析解，對工程設計有著重要的參考意義；在數值模擬方面，以考慮錨固圍巖滿足規則化庫侖摩擦模型為基礎，利用虛功原理推導了接觸問題的有限元方程的計算格式，為開發運用大型商用有限元軟體msc . marc提供了理論根據，也形成了本文的理論基礎：最後，論文以南水北調東線穿黃隧洞穩定性分析項目為工程實例，利用本文所述的接觸問題的摩擦模型理論，對錨桿支護結構的應力場、位移場的變化規律進行了研究，分析了加錨支護對隧洞圍巖應力、變形的影響。After the briefly present the origin and features of internet protocol version 6 ( ipv6 ), the paper detailedly introduced the conception, characters, security technologies of vpn, and main tunnel protocols used to implement and deploy vpns. after analyzing and comparing these technologies of realizing vpns, we choosed ipsec. then, the paper analyzed in the ipsec structure, function, work mode, and its components such as authentication header ( ah ), encapsulating security payload ( esp ), internet key exchange ( ike ), encryption and authentication algorithms, security association, security policy, and how they cooperate with each other in order to secure ip packages
在簡要介紹ipv6協議的由來和優點之後，詳細闡述了虛擬專用網的概念、特點、安全技術及實現的關鍵隧道協議，通過對實現技術的分析比較，選用了安全性強大的ipsec隧道技術，接著深入研究了ipv6安全協議ipsec的體系結構、操作模式，詳細論述了ipsec協議簇的各個組成部分，如認證報頭ah協議、封裝安全載荷esp協議、密鑰管理ike協議、加密認證演算法、安全聯盟和安全策略等，以及這些組件之間如何協作，來共同實現對網路層ip數據包的安全保護。The elastic methods are beam - columns method, the pseudo load method, the pseudo lateral load method, the iterative gravity load method and the negative rigidity method
常用彈性分析的方法有：樑柱法、虛擬荷載法、虛擬側向荷載法、迭代重力荷載法和負剛度法。( 2 ) to determine the worst load case accurately and quickly, influence faces of main sections are plotted < > ( 3 ) combining the influence face with the pre - reinforcement space fe model, the internal force and the stability are computed, then the main reasons of the disease are analyzed
（ 2 ）為準確快速地確定最不利荷載工況，運用虛位移原理和邊界元相結合的新方法，繪制了主要檢算截面的內力影響面。 （ 3 ）應用空間有限元模型，結合內力影響面，對加固前進行內力和穩定性計算，分析其主要的病害原因。The methods considering the elastoplasticity are the elastic - plastic hinge method and the pseudo load method. based on the need of non - linear analysis, researchers brought forward nonlinear calculation methods to control the iterative constringency, such as the load controlling method, the displacement controlling method, the arc length controlling method and the pseudo load method
考慮彈塑性的分析方法有：彈性-塑性鉸法和虛擬荷載法根據非線性研究分析的需要，研究人員先後提出了：荷載控製法、位移控製法、弧長控製法和做功控製法等控制迭代收斂的非線性計算方法。Then using the method of unit virtual - load, the displacement constraints are transformed into a explicit function to the design variables
然後利用單位虛載荷法將位移約束轉化為設計變量與約束的顯式關系。Based on the results, the eccentrically braced frame has the advantage of higher initial stiffness, load - bearing and energy consume ability. through the limit state analysis principle, the limit load was calculated by assuming the same destroy pattern of braced frame as that in the experiment. comparing the theory limit load with the measured, a good agreement was founded. it shows that the limit state analysis is really a practicable way analysed the reinforced concrete frame braced with eccentric steel
應用極限分析中的極值原理對偏心角鋼支撐鋼筋砼框架進行極限分析時，首先擬定與試驗結果相一致的結構倒塌破壞模式，然後根據虛功原理建立了結構在極限狀態時極限承載力的計算公式，從所求的權限荷載的理論值與實測值的比較來看，理論計算值與試驗的實測值基本吻合，這說明利用本文擬定的結構破壞模式對偏心角鋼支撐框架結構進行極限分析是一條可行的途徑。In this task, a test _ bed for engineering vehicles was developed based on virtual instrument. the whole system comprised 5 parts : the checking of running velocity, which was gotten on the test bed through the vehicles simulating real road running ; the temperature checking of the important points on the transmission system ; the temperature checking of the circling cooling water on the exit port of dynamometers ; the control of the loading power. which was given to vehicles by the power measuring machine ; the control of the total test - run time
本課題開發的基於虛擬儀器的工程機械跑合試驗臺，其測量和控制參數有：行駛速度檢測（車輛在跑合試驗臺上模擬路面的行駛速度） ；傳動系溫度檢測（試驗車輛傳動系主要部位多點溫度） ；冷卻水溫度檢測（測功機循環冷卻水出口溫度） ：加載功率控制（測功機施加給車輛的載荷） ；跑合時間控制（試驗車輛在試驗臺上加載跑合的總時間） 。2. for the problem with size, stress and displacement constraints, the stress constraint is transformed into movable lower bounds of sizes, the displacement constraint is transformed into an approximate function which explicitly includes design variables by using mohr integral theory. a mathematical programming model of the optimization problem is set up. the dual programming of the model is approached into a quadratic programming model
2 .對于尺寸、應力和位移約束的問題，將應力約束化為動態下限，用單位虛荷載方法將位移約束近似顯式化，構造優化問題的數學規劃模型，將其對偶規劃處理為二次規劃問題，採用lemke演算法進行求解，得到滿足尺寸、應力和位移約束條件的截面最優解。It is important to soft developing. the topic of the paper has been listed in the basic research project for national defence of the " tenth - five project " by the commission of science technology and industry for national defence. one is " distribution experimentation and test technology ", the other is " mathematic helicopter and test technology ". base on the research of literature of the world, we will research the technology of measurement and control system
本文結合十五國防預研項目「分散式協同綜合虛擬試驗與測試技術」和個五航空預研項目「直升機飛行載荷全數字加載控制和數據採集技術」的研究，在分析了國內外研究現狀和技術發展趨勢的基礎上，對其共性的關鍵技術之一? ?系統開發支持平臺（通用測控平臺）技術展開了深入研究。Some hardware are used to construct data acquisition system, virtual instrument are used to compile data processing programs. just as expected, according to standard of iec61400 - 13, some diagram and curve are depicted in the end of dissertation, and program can provide life prediction method of wind turbine from damage theories in the end of dissertation
疲勞載荷測試系統通過一定的硬體系統採集相關數據，在數據分析方面使用虛擬儀器軟體進行數據處理，使用功能強大的labview軟體編程，得到iec61400 - 13標準中所要求的曲線和圖表，最後根據損傷理論得到機械部件的疲勞載荷譜和疲勞壽命的估算方法。In the analysis, a cfst arch ( single tube ) is first divided into a finite number of straight beam elements. according to the virtual work principle and the modified newton - raphson iteration method the tangent stiffness matrix considering double nonlinear properties is established. with regard to the non - equilibrium forces, the material nonlinear property along the height of the section and the length of the element is considered and the computation accuracy is improved as a result
本文首先將拱肋劃分為一系列的直梁單元，運用虛功原理和修正newton - raphan數值迭代演算法的基本原理準確推導了拱肋直梁單元的非線性切線剛度矩陣；在不平衡力方面考慮了沿截面高度和單元長度方向材料非線性的發展過程，提高了計算精度；再根據得到的切線剛度矩陣採用荷載增量步內修正newton - raphan迭代的增量迭代法進行了求解。Abstract : a previously proposed approximate quasi - static theoretical method is employed herein to examine the deformation and perforation of a simply - supported circular plate struck by a flat - faced projectile at normal incidence. based on the principle of virtual work, static load - displacement relationships are first obtained and then used to predict the energy - absorbing capacity of the plate subjected to relatively low speed impact. it is shown that good agreement is obtained between the theoretical predictions and the available experimental data, provided that adiabatic shear plugging failure does not occur, but the influence of strain rate sensitivity is taken into account
文摘:採用準靜態近似理論方法分析簡支圓板在平頭彈丸正撞下的變形和穿透.首先基於虛功原理得到了靜態荷載位移關系，並將其用於預測低速沖擊下圓板的能量吸收能力.當考慮了材料的應變率敏感性，並且不發生絕熱剪切沖塞破壞的前提下，理論預測和實驗結果吻合良好The random excitations are transformed into pseudo excitations expressed in the state equations before the resulting deterministic equations of motion are solved by the proposed precise time - integration scheme with augmented matrix and in unified form
先用虛擬激勵法將隨機荷載化為確定性荷載，然後把確定性荷載用狀態方程表示，進而構造出形式統一的增維精細時程積分格式。分享友人