法向力分佈 的英文怎麼說
中文拼音 [fǎxiànglìfēnbù]
法向力分佈
英文
normal force distribution-
It make the principle formula become simpler and more practical. by the attenuation regulation and distributing character of stress wave under the linear charge blasting, the paper bring forward the idea that the columniation stress wave can be regarded as cylinder stress wave, the end stress wave as spherical wave. the perfect stress attenuation formula in radical direction is established in complete elastic medium
根據條形藥包爆破應力波分佈特徵及衰減規律,提出了可將條形藥包爆破柱部應力波當作柱面波、端部應力波當作球面波處理的研究方法:建立了理想的完全彈性介質中球藥包和條形藥包爆破徑向應力衰減方程。This paper simply introduces the device of on - line monitoring for the thrust of the rotating maching, then discu ed the finite dement analyses on the on - line monitoring elastic dement for measuring thrust in detail, in order to develop the performance of the se or and the device, we calculated the distribution of the stre 、 strain 、 axial di lacement in the elastic element using the finite element method when the axial forces f = 3 104n, the result is very satisfied
簡單介紹大型旋轉機組軸向力在線監控裝置,然後詳細介紹軸向力測力彈性元件的有限元分析,為了提高所研製的測力傳感器的性能,採用有限元方法計算了彈性元件在軸向力f = 3 104n時的應變、應力、靈敏度及軸位移等的分佈情況,分析結果表明:所設計的測力傳感器完全符合廠方的要求及儀表性能指標。This article describes the development process of surrogate models and introduces some experiment design methods and approximation approaches that can be used for a mdo surrogate model, they are full factorial experiment design, orthogonal experiment design, uniform experiment design, central - composite experiment design, and polynomial response surface method, kriging method, radial basis function method and artificial neural network
為此本文中分別介紹了正交試驗,均勻試驗以及中心復合試驗等幾種試驗設計方法,以及多項式響應面, kriging ,和徑向基函數等幾種數學近似方法。並且通過構造描述機翼展向升力分佈的代理模型,對上述幾種方法作了對比分析。In the hogging condition, double bottom and the side shell remain the ultimate bucking strength, deck and upperwing tank remain the yield stress, and the other parts keep elasticity. then the key to calculate the ultimate strength of ship hull girders is to ascertain the ultimate bucking strength of the stiffened panels. in this regard, the developed formulation is designed to be more sophisticated than previous simplified theoretical method for calculating the ultimate strength of stiffened panels under combined in - plane bending and lateral pressure. fabricatio n - related initial imperfections ( initial deflections and residual stresses ) are included in the panel ultimate strength calculation as parameters of influence. all possible collapse modes involed in collapse of stiffened panels, including overall buckling collapse, column or beam - column type collapse, tripping of stiffeners and local bukling of stiffened web are considered
確定了船體梁整體破壞時的剖面應力分佈之後,關鍵在於確定板架的極限屈曲強度。本文充分考慮了在縱向彎曲、橫向壓力作用下加筋板可能發生的幾種破壞模式,即板架的整體屈曲破壞、樑柱形式的破壞、筋的側傾、腹板的屈曲並同時考慮了初始焊接殘余應力、初撓度的影響,使其更精確的計算加筋板的屈曲強度。對于加筋板中加強筋腹板的局部屈曲,採用解析法推導出筋的腹板的撓度方程及其邊界條件,求解相應的方程,從而計算出腹板的局部屈曲應力。( 2 ) respectively by elastic theory analyses and methods of structural mechanics, transverse static analytical equations for flexible pipeline rigid pipeline are established whose outcomes are applied in numerical example to compare those with that by finite element method. ( 3 ) considering interaction of filled soil, pipeline and foundation, with an eye to non - linear soil model, in view of the initial geo - stress field and the effects of interface between soil and pipeline, and by finite element method the calculational model and method are built for transverse stress in pipeline. then, by the great finite element analytical software ansys, those outcomes are applied in calculation example of positive buried pipe to educe the distribution of circumjacent soil pressure and stresses on cross section and to compare it with that calculated by conventional ways before those outcomes are applied in engineering case of positive buried pipe with flexible filled materials to confirm distribution of soil pressures after the measure for reduction and to compare it with measurements. as a result, the model set up in this paper is proved to be applicable after all above - mentioned analyses
本文基於彈性理論和有限元原理與方法,分析了上埋式地下管道橫向力學計算方法和性狀並探討了上埋式地下管道的減荷等問題: ( 1 )在分析現有幾種典型的管道垂直土壓力計算方法的基礎上,探討了影響垂直土壓力的主要因素以及改進的方法; ( 2 )分別通過彈性理論分析法和結構力學的方法,建立了地下管道柔性圓環和剛性管涵的橫向靜力計算方程,並應用在算例中,把所得結果和有限元方法所得結果進行對比分析; ( 3 )考慮填土、管道和基礎的共同作用、土體的非線性特性、初始應力場以及土體和管道的接觸面因素的影響,利用有限元的思路,建立了地下管道橫向力學有限元計算模型和方法,並且採用大型有限元分析軟體ansys ,針對上埋式管道工程算例,得出了管周土壓力以及管道橫截面應力的分佈狀況和規律,並和理論值進行對比;針對施加柔性填料的上埋式管道工程實例,得出了減荷后的土壓力分佈,並和實測值進行了對比。Using the complex potential method in the plane theory of elasticity of an anisotropic body, the series solution of finite anisotropic thin plate containing an elliptical inclusion is proposed with the help of faber series. a hybrid element with an elliptical inclusion for anisotropic materials is obtained by using the hybrid variable principle, and the element efficiency is verified by numerical examples. the state of the damage is modeled by an elliptical soft inclusion, and using the point stress criterion based on characteristic curve and yamada - sun etc. criteria, the prediction of the strength of a composite laminate with damage is set up
首先基於經典層板理論,將復合材料層板的彈性問題化歸為均勻各向異性板來求解;採用各向異性體平面彈性理論中的復勢方法,以faber級數為工具,給出了有限大含橢圓核各向異性板彈性問題的級數解形式;利用雜交變分原理,成功導出含橢圓核各向異性板雜交應力有限元,並用算例驗證了該單元的可行性和有效性;採用含剛度折減橢圓形彈性核的沖擊損傷模型,引入基於特徵曲線和yamada - sun破壞準則的點應力判據,建立了含損傷復合材料層板剩餘強度的分析方法;通過數值計算詳細討論了各種幾何參數對損傷層板應力分佈、剩餘強度的影響,得到了一系列對工程應用具有實用價值的結論。Proceeding with the support " s force condition is analysed in the static and revolve state, the stress distributions in the contact areas of support and roller are researched by way of hertz theory, the tow - dimensional elastic movement of the contact area is studied by contact mechanics, and the formula and curve of movement regulation are deduced
從回轉窯靜止與運轉時支承的受力情況分析著手,依據赫茲接觸理論對托輪與滾圈接觸區的壓力分佈進行了分析,並用接觸力學方法研究了接觸區的二維彈性滑動,推導出回轉窯軸向下滑計算公式,從而得出回轉窯軸向下滑特性曲線。4. combined with the design of the three gorges prestressed concrete penstock with steel liner in the three gorges power. station, the consistence among the results of theory calculating, the analysis of plane finite element and three dimensional finite element is proved, the concrete stress distributions of the prestressed concrete penstock are analyzed with different steel liner thicknesses, different crack resistances, different concrete thicknesses and different initial radial gaps between steel liner and concrete. the feasibility of the design method of prestressed concrete penstock with steel liner is proved
結合三峽電站鋼襯預應力混凝土聯合受力壓力管道的設計方案選擇及論證分析,對比分析了鋼襯預應力混凝土壓力管道理論計算、平面有限元和管壩整體三維有限元分析結果的一致性,確定了管道結構在不同鋼襯厚度、不同抗裂度要求、不同外包混凝土厚度及不同鋼襯與管壁混凝土間初始徑向間隙等因素影響下的內力分佈規律,驗證了鋼襯預應力混凝土壓力管道的設計方法。By means of similar simulation, lateral abutment pressure distribution and concentration degree which at the face of the upper coal, the distance between peak stress and coal surface, the influence circle of abutment pressure, and the transfer and weakening of concentrated pressure at the bottom side are analyzed on actual geology data in pingdingshan 8th mine f15 and f ( subscript 16 - 17 )
摘要採用相似模擬的方法,以平頂山八礦己二采區己15和己(下標16 - 17 )煤層實際地質資料為基礎,分析了近距離煤層上煤層開采時,在上煤層采場兩側向的支承壓力分佈及集中程度、峰值距煤壁的距離、支承壓力的影響范圍;一定范圍內底板中集中應力的傳遞及漸衰減特徵。In order to study the pressure - swirl nozzle ' s atomization characteristic, the particle diameter distributions along axis of the nozzle have been measured by immerging
摘要為了研究一種高壓靜電壓力旋轉噴嘴的霧化特性,採用浸入法測量了該噴嘴噴霧霧滴粒徑在噴嘴軸向的分佈狀況。The stress and working pressure on teeth of the staged nut in screw presses has been studied by fem method which proves that using staged nut in screw presses is helpful for improving the non - uniform distribution of stress and working pressure on the teeth and extending the working life of the screw
摘要採用了有限元法對滑動螺旋壓力機的階梯式螺母進行了受力分析,研究了螺母螺牙應力及螺牙工作面的接觸壓力,並將階梯式螺母與普通螺母進行對比,認為螺旋壓力機中使用階梯式螺母有利於改善螺牙牙根應力軸向應力分佈不均和螺牙工作面的接觸壓力分佈不均的情況,從而提高螺旋工作壽命。With the help of this program, this paper does research on the moved backwards of the slide surface, lengthening the anchor section, the soil nail ' s total force, gets conclusion about relations between the soil nail ' s length and the slope ' s grade, height, soil ' s mechanical parameter ; relations between soil nail ' s total force and coulomb soil pressure. with the help of the large multiuse finite element program ansys, this paper analyzes the soil nailing in one - step ' s slopes, in two - steps " slopes, puts the emphasis on the axis force ' s distributing along the soil nail at each rows, the effect of both the excavating mode and the original slope figure to the axis force of the soil nail, the one another effect between the upper - step slope and the nether - step slope in the soil nail ' s axis force, gets conclusion about the design of soil nail at the first low, different slope body is the same with different excavating mode, the original slope figure has more effect to some than others because of the slope body, the reasonably design of the step width in two - steps slopes, the two - steps excavating and retaining has more virtue than the one - step ' s. through soil pressure analysis this paper does research on the differences and the links between the coulomb soil pressure theory and the rankin ' s, the vertical pressure at the slope surface when the slope surface is inclined and the retaining wall is rough, the soil pressure ' s distributing behind the panel, gets conclusion about the effect of both the slope body inner stability and the slope surface local stability to the soil pressure
通過分析比較,論證了對數螺旋線型比圓弧形作為邊坡的假設滑裂面具有較多的工程優點,並為此編制了一個採用極限平衡法分析土釘支護的fortran語言程序,以此作工具對滑裂面的后移、土釘錨固段的超長、土釘總力的大小等方面作了研究,得出了有關土釘的長度與邊坡的坡角、坡高、土體力學參數的關系、土釘總力與庫侖土壓力間的關系等結論;採用大型通用有限元數值分析程序ansys分別對採用土釘支護的一階邊坡、二階邊坡進行分析,重點是研究各排土釘的軸力分佈規律、開挖方式及原始邊坡形態對土釘的軸力的影響、上下階邊坡在土釘軸力方面的相互作用,得出了有關第一排土釘的設計問題、不同類型的土體應適用於特定的開挖方式、原始開挖出的邊坡形態對一些類型坡體的邊坡土釘支護有較大的影響而對另外一些影響不大、二階邊坡臺階寬度的合理確定、二階開挖及支護比一階時具有較多的工程優點等結論;通過土壓力分析對朗肯、庫侖兩種經典土壓力理論的區別與聯系、坡面傾斜及墻背有摩擦時的坡面豎向應力分佈、面板背土壓力的分佈形態作了研究,得出了邊坡支擋土壓力受坡體內部穩定與坡面局部穩定兩個方面的影響、土釘支護面板背土體中卸荷拱的存在對面板受力有利等結論。The mechanism is divided into finite elements and researched by ked method. then kinematic differential equations are established for each element and the general kinematic differential equations are built through assembling all the elements. a closed numerical method based on the mode superposition principle is employed to solve the equations
將四連桿機構劃分為多個有限單元,建立其單元運動微分方程和系統運動微分方程,運用實振型疊加法的閉式演算法求出機構在一個運動周期中各個廣義坐標方向的彈性位移,同時求出機構不同位置時各構件上動應力分佈情況、機構前四階振型變化情況。Both the effect of substrate deformation and the state of large deflection of the microbridge are involved in the theoretical expression. furthermore, the distribution of axial stress in the micro bridge is discussed in detail by taking different shapes of cross section into consideration. and a shape factor is introduced into the expression, which simplifies the theoretical expression
理論上對薄膜微橋法的公式進行了進一步的化簡,在考慮襯底變形貢獻和大撓度的基礎上,進一步探討了微機械加工過程中不同橫截面形狀的情形;並對矩形和梯形截面微橋的軸向應力分佈作了分析,補充和發展了薄膜微橋法的理論;引入了橫截面形狀修正因子,簡化了公式的表達和計算。Normal stress distribution on the inner cylinder forced by power law fluid flowing in annulus with inner cylinder executing a planetary motion
冪律流體在內管做行星運動的環空中流動時的內管法向應力分佈Based on the reynolds " lubrication approximation, and utilizing the small parameter method, the velocity and the pressure equations for two spheres translating normally and tangentially with an interstitial second - order fluid are derived for modeling wet granular assembles using the discrete element method. as a result, analytical solution for the tangential force and the torque were obtained
採用reynolds潤滑理論和小參數法等研究了存在填隙二階流體時兩球法向及切向運動時的運動,位移及壓力分佈規律,從而求出擠壓力或切向阻力、阻力矩的解析解。4. dicussing soil pressure ( supposed as p ) and level displacement ( supposed as s ) in condition that consideration time performance, the relation is p = ae, when the defomation of wall has evidently effect on the soil pressure. 5. the deformation of wall ( supposed as sw ) leads to soil layer sedimentation ( supposed as pw ), the research find pw = 1. 22sw 6. the artifical neural networks has vast and applied foreground in the information construcion of deep foundation excluding the accidental factor
4 、探討了考慮時間效應的土壓力和位移關系曲線,認為在當墻體的變形對土壓力分佈產生明顯影響時,二者間的關系可用一指數函數來表達: p = ae ~ ( ( / s ) ) 5 、墻體側向變形,導致墻後土體產生沉降,在本次研究中,排除掉基坑降水施工因素的影響,由墻體變形導致的墻後土體沉降,二者具有p _ w = 1 . 22s _ w關系; 6 、將基於時間窗口滾動多步神經網路預測方法和應用於深基坑工程墻體變形的預測工作,具有較高的預測精度,該方法在巖土工程變形預測方法中具有廣泛的應用前景。An improved distribution method of the horizontal lateral forces to the planar structures and a new one to the structures with torsional responses are presented. the example of the pushover analysis testifies the validity and feasibility of the studied distribution method, and the potentiality of the use of static pushover analysis method to irregular structures is also proved. the capacity spectrum method of the structural performance evaluation is discussed in this paper
對鋼筋混凝土結構靜力推覆分析( push ? over )的研究,主要討論了靜力推覆分析中水平側向力的分佈形式,提出了一種平面結構的改進水平側向力分佈形式和樓層平面出現不可忽略扭轉反應的空間結構的水平側向力分佈方法,並用推覆分析實例驗證了所提出的水平側向力分佈形式的正確性和可行性以及靜力推覆分析適用於不規則結構的可能性,同時也驗證了結構變形控制抗震設計方法的合理性。Through leading the files into the stability analysis of ansys, ultimate load in the effect of residual stress can be gained. the method can be applicable to simulate difficult distribution of the residual stress
該方法通過指定單元沿厚度方向5個積分點處的應力值,來反映冷彎殘余應力沿厚度方向變化的特點,並適用於模擬各種殘余應力分佈。Typical earthquake records are selected and artificial earthquake wave under consideration are designed according to the response spectrum of chinese code. nonlinear time history analysis ( nl - tha ) to each building with the eight earthquake wave altogether as input are conducted, and the pushover analysis ( poa ) and the capacity - demand - diagram methods ( cddm ) analysis with five common lateral force patterns are carried out on each building
分別對各結構進行典型地震動下的時程分析,以及採用五種常用側向力分佈的pushover分析與能力譜法分析,根據等頂點位移原則對比不同地震動強度下兩者的層間位移反應,對不同層數結構以及不同地震動強度下pushover分析的側向力選取提出了建議。分享友人