虛應力 的英文怎麼說
中文拼音 [xūyīnglì]
虛應力
英文
virtual stress-
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。Virtual reality technology can provide " participants " with a feeling of being personally on the scene. as a main actor in the virtual environment, userscan control any objects in the virtual environment arbitrarily and can get reaction in time. in the hyperspace of the information, he can get acknowledge with their own percipience and cognition, and, seek the solutin, and form the new conception. the association of the virtual reality technology and java technology intensify the interaction between the users and viryual reality technology. with the interface provided by java, the user can control any objecs and change the attributes ( such as position, angle, color and etc. ). this paper formulizes application of the virtual reality technology in the system of the building seilling which uses the real three dimensions models to replace of static picture ' s and word ' s description. in the process of the practice, the paper analyses the difference between javascript, java claa and java applet, and formulize the their applications in this system
用戶在多維信息空間中，依靠自己的感知和認知能力全方位地獲取知識，發揮主觀能動性，尋求解答，形成新的概念。虛擬現實技術與java技術的結合增加了虛擬現實技術與用戶的交互功能，用戶可以通過java提供的界面，操縱場景中的任何物體，並改變相應的屬性（如：位置，角度，顏色等等） 。本篇論文闡述了虛擬現實技術應用在售樓系統中，用真實的三維模型來代替原有的靜態圖片及文字描述，在實踐過程中，分析了javascript ， java類，及javaapplet實現功能中的利弊，分別闡述了它們在本系統中的應用，從理論上講，本課題所研究的虛擬現實技術不只適用於售樓系統的電子商務中，同樣可用於軍事和演習、醫學、教育、娛樂和工程設計等領域。An apparent or pseudo change in the sign occurs when a stress trajectory passes through an isotropic point.
當一個主應力跡線通過一個各向同性點時，該符號會發生一個表面上的或虛假的改變。Manipulate mechanism with concentrative link lever has important significance to improve maneuverability of bulldozer currently. this thesis includes : designing manipulate mechanism with concentrative link lever and simply calculating force and displacement for operation, based on the referring existing manipulate mechanism of bulldozer ; using high - grade 3 - dimensional plotting software ug ( unigraphics ) to sculpt ; using adams ( automatic dynamic analysis of mechanical systems ) to establish virtual prototyping model and do kinematic simulation. the results verify the rationality of this mechanism and provide the basis for trial - manufacture of physical prototyping and betterment design
本文做的主要工作是：參考推土機原有的變速轉向操縱機構，設計了集中連桿操縱機構並進行操縱力和操縱行程的簡單計算；使用高檔三維造型軟體ug （全稱unigraphics ）進行推土機集中連桿操縱機構的造型設計；應用機械繫統運動學/動力學模擬分析軟體adams （ automaticdynamicanalysisofmechanicalsystems ）對所設計的機構建立虛擬樣機，並進行運動學模擬分析，驗證了機構設計的合理性，為物理樣機的試制和改進設計提供了依據。Based upon virtual displacement method and the updated - lagrangian approach, stiffness matrices for two - dimensional elastic - plastic beam model in large displacement were proposed, in the derivation of which transverse stress was included because it was believed that part of the 2nd order effects of various stresses, which are in equilibrium with each other and with the external loads, will counteract each other and neglecting either part would possibly lead to incorrect results
利用虛位移原理和更新的拉格朗日方法，導出了大位移彈塑性梁單元剛度矩陣的顯式表達式，在剛度矩陣推導中引入了截面內非線性剪應力和橫向應力的影響，剛度矩陣通過了剛體檢驗。之所以要引入橫向應力的影響，是因為本文認為，保持平衡所需的所有應力，它們各自的二階效應會相互抵消，因此忽略其中的任何一項都可能導致不正確的結果。The living example model has used the trial model of reality, thus for the initial stage calculation data has provided effectively and verifys this text is aimed at giving an economy practical virtual reality method and the train of thought to the resisted fire research aspect of prestressing force net frame
從對預應力網架結構在火災作用下的的計算中發現預應力網架結構的抗火特性和普通網架抗火特性的差異，為預應力網架結構的工程實用安全性提供一定的參考。本文旨在對預應力網架的抗火研究方面給出一個經濟實用的虛擬現實的方法和思路。Data processing software is designed for tbs - 2000 strain measuring system in the classical virtual instruments engineering workbench ; it is applied to process the data which are acquired in the way of dynamic stress analysis, statistic stress analysis and proper frequency analysis
利用虛擬儀器的典型開發平臺labview針對tbs ? 2000應變測試系統開發了數據處理軟體；利用該數據處理軟體對測試所得的數據進行了動、靜應力分析和固有頻率分析。Today, cast - in - situ piles are more widely used in deep foundation engineering because of their many advantages, such as better adaptability to various ground condition, providing enormous bearing capacity by a single pile and smaller dosage of reinforcing steel bar. but, their own disadvantages, such as sediment under tip, clay slurry around pile, friction and tip resistance disagreement and initial ground stress freeing, limited their bearing capacity, lowered the utilization ratio of material and increased the settlement
灌注樁，因其對地層適應性強、能提供較大的單樁承載力、鋼筋用量少等優點，在目前深基礎工程中得到了極為廣泛的應用。但是，灌注樁的固有缺陷，諸如孔底虛土；孔壁泥漿；端阻、側阻發揮不同步；鉆孔后原地應力釋放等，限制了其承載力的發揮，使得材料利用率不高，沉降較大。The corresponding control equation is given. the control equation and boundary condition about the addiontional small deformation ' s effect caused by initial stress using virtual principal theory in cylindrical reference frame. generalized stress and strain and equivalent constitutive equation are given
第四章提出了描寫柱形薄殼中初應力的數值特徵，將應力的三維分佈轉化為二維分佈，給出相應的支配方程；在柱坐標系中，利用虛功方程建立了初應力對附加小變形影響的控制方程和邊界條件；給出了廣義應力、廣義應變及等效本構關系。The relations between the dummy stress amplitude and fatigue life can be easily developed. and then, the bhw - 35 steel fatigue design curve can be obtained according with asme criterion and bs5500 criterion. compared ~ vith the design curves provided by the asme and bs5500 criterion, the curve got in this paper provides reliable direction for the fatigue design of boiler drum, which used on the altering generating power plant set
將焊縫材料的虛擬應力幅與壽命關系，按照asme和bs5500規范的方法分析得到bhw ? 35鋼疲勞設計曲線，並與asme和bs5500規范中的設計曲線進行比較，為我國調峰機組410t / h鍋爐汽包疲勞設計提供可靠的實際依據。Principle of virtual stress
虛應力原理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。As a part of the civil 863 plans, two multiple - contact models for two kinds of braking system are built in the paper, in which contact fields are described as coons surfaces, initial velocity is programmed in fortran. the thermal - mechanical coupling braking processes are simulated for the first time by msc. marc, the general - used nonlinear fem software. time distributions of the velocity, the stress and the temperature of the components under various initial velocity and brake force are obtained, which offer theoretic gist to study the life of the wheel, the disc and so on
作為國家行業863重大課題《鐵路機車車輛虛擬樣機系統》的一部分，本文在研究接觸問題和熱?機耦合問題數值方法的基礎上，採用國際上通用的非線性有限元分析軟體msc . marc建立了踏面制動和盤形制動主要部件的多體接觸計算模型，其中用解析方法描述，即用nurb曲線、高斯曲面來描述接觸區域，用fortran語言編寫定義初速度的用戶子程序，首次對兩種制動過程熱?機耦合進行了數值模擬，定量給出了主要制動部件在不同初速度、不同制動力下各個時刻的速度、應力和溫度的變化規律，為研究車輪、閘瓦以及制動盤壽命提供了理論依據。Seek the sound cable tension to aim at minimum of maximum stress by the method of fem analysis combined with optimization. during optimization, use virtual lamina beam element to analyze the structure. the result of optimization of the cable tension of wenhui bridge shows this method is easy, effective and applicable
用虛擬層合梁單元對結構進行計算，以梁和塔的最大應力最小為優化目標，採用有限元計算同優化分析相結合的方法來確定斜拉橋的合理成橋恆載索力，文暉大橋成橋恆載索力的優化結果表明該方法簡單、高效、適用。In this paper we dissertate the common structure cross forms and excavating methods of highway double - arc tunnel home and abroad at the first part, and study common simulation methods of tunnel construction afterwards. based on the method of reversing and releasing the stress, and combined with the capacity of simulating continuous construction of ansys programme, we come up with the thought of using the method of applying virtual support force to release the stress step by step to realize the step - by - step release of initial stress during the tunnel construction simulation. with the help of design language of ansys, we develop a command to apply the virtual support force
探討了應用平面應變模型進行隧道施工過程模擬的常用方法，在「反轉應力釋放法」的基礎上，結合ansys軟體可以模擬連續施工的特點，提出利用「施加虛擬支撐力逐步釋放法」來實現隧道施工過程中地應力隨工序的逐步釋放的思路，並且利用ansys的apdl設計語言，開發出施加虛擬支撐力的命令，實現了施工過程中應力的逐步釋放，從而找到了一種模擬隧道施工過程的好方法。According to virtual prototype simulation course, we can get constraint con - dition and receiving strength state of thigh, calf, arm and u fork, consequently carry on modal analysis of thigh and calf as well as arm. then carry in effect the
最後根據虛擬樣機模擬過程，可以獲得大腿、小腿、大臂、小臂和u型叉的約束條件以及受力狀況，從而對大腿、小腿和大臂、小臂進行模態分析，以及對u型叉、髖部十字軸等部件進行應力分析並且提出結構的合理改進。Virtual stress amplitude - based lo
基於虛擬應力幅的低周疲勞可靠性分析Virtual stress amplitude - based low cycle fatigue reliability analysis
基於虛擬應力幅的低周疲勞可靠性分析Cybex trazer is a powerful new experience that dramatically improves muscle and mental agility while adding exciting new dimensions of fun and function to exercise. cybex trazer launches you into an interactive virtual world where reaction time, acceleration, speed, power and balance drive on - screen activities. it s a unique and entertaining fitness experience that utilizes patented cybex trazer technologies to measure performance in a way that cannot be duplicated
Cybex trazer互動訓練系統是一個突破傳統健身事業的發明，它利用虛擬畫面和刺激有趣的游戲，訓練用者的反應力量平衡力和體能，這種互動訓練大大改善人體肌肉與人腦意識的配合，加強身心反應，適合任何年或體能人士。In chapter two, the liner theory of elasticity solid ' s addiontional on initial - stress configuration is narrated, the initial stress is adopted as parameter described currently configuration, corresponding virtual principal and variation method are given, and the energy theory of balanceable stable critical condition is put forward according to the ideology of addiontional deformation on initial stress configuration
第二章從初應力位形上彈性固體附加變形的二次理論入手，引出了初應力位形上附加小變形的場論；採用初應力作為描寫當前位形的參數，提出相應的虛功方程和位移變分原理；從初應力位形上附加變形的思想，提出平衡穩定臨界條件的能量原理。分享友人