板的撓度 的英文怎麼說
中文拼音 [bǎndenáodù]
板的撓度
英文
deflection of plate-
After analyzing the soil stress, flexure moment data of central section of the sheet, and the flections data of two kinds of holding sheet models which are different on span, the paper gets the horizontal and vertical soil stress distribution rules and compares the result of the exam with calculating result of classic soil stress theory
通過對兩種跨度的擋板模型的土壓力、擋板跨中彎矩、擋板跨中撓度值的分析總結,得到了擋板後土壓力沿高度及水平方向的分佈規律,並在土壓力分佈形式及數值大小與經典理論作了比較。Along with toll - gate of thorough, the flotage speed of the wooden board would be more and more quick, and, there will be to fly at the overhanging cliff central part of the sea gull obstruction player jump up, however believe as long as practice much and much, control time of the whereabouts masterly, should be able to smooth customs clearance
隨著關卡的深入,木板的漂浮速度會越來越快,而且,在懸崖中部,會有飛翔的海鷗阻撓玩家的跳躍,不過相信只要多多練習,熟練掌握下落的時間,應該可以順利通關。In light of the elastic thin plate theory, the author induced equilibrium differential equation of bi - direction cellular slab, which was proved correct through analysis and comparison to result of ansys to with theoretical calculation. through the deflection and bending moment coefficient calculation of bi - direction cellular slab under various boundary conditions, the author brought forward the theory that the deflection of mid - span and bending moment coefficient calculation of mid - span and support of bi - direction cellular slab could be in accordance with solid plates ", which could satisfy the precision of engineering
本文根據彈性薄板理論,導出了雙向空腹板的平衡微分方程,並通過理論計算和通用有限元程序ansys結果對比,驗證了其正確性;通過對各類邊界條件下雙向空腹板撓度和彎矩系數的計算比較,本文提出:雙向空腹板跨中撓度及跨中、支座彎矩可使用本文空腹板剛度公式查找現有的實心板撓度彎矩系數表進行計算,完全能滿足工程精度要求。Also, the thesis calculate and analysis the transverse deflection of steel box girder deeply in multiple factors. firstly, the article introduced the calculative methods and theory of local stress and strain of bridge structure. then program software system of finite element method was introduced. after that, the influential factors to the calculatial result and their values were analysed and suggested
本文首先介紹了橋梁結構局部應力應變計算理論和方法,對有限元計算程序進行了介紹,然後分析了縱橫隔板設置、梁高及梁寬變化等因素對鋼箱梁橋面板在恆載作用下的橫向撓度的影響,並將這些計算結果進行對照分析,從而找出了影響橋面板橫向撓度的主要影響因素,並得出了相應的數值可供工程實踐參考。The research shows that : 1 ) the ductility of the hsc bending members constructed is much greater than 5 ; 2 ) increasing the vertical links and distribution steel can increase the deflection under ultimate moment ; 3 ) with appropriate compressive bars, vertical links and distribution steel the increase of moment after yield and the decrease of moment under ultimate moment can be ignored, so the ductility of the hsc bending member is much larger ; 3 ) the width / depth ratio of hsc bending member has no obvious effect on the ultimate compressive strain of concrete ; 4 ) the method used here to calculate the deflection is applicable ; 5 ) the location of crack coincides with the location of vertical links and distribution steel ; 6 ) the bending property of the hsc structure under the blast load can meet the demand of protective engineering
研究表明:本文研究的梁、板構件的延性比遠大於5 ;增加箍筋(鉤筋、分佈筋)含量,可以提高壓區混凝土剝落時的撓度;在適當的受壓筋、箍筋(鉤筋、分佈筋)含量下,可以忽略壓區混凝土剝落瞬間的承載力下降,從而大大提高構件的延性;受彎構件的寬高比對壓區混凝土極限應變的影響不明顯;受彎構件的裂縫間距受箍筋(鉤筋、分佈筋)的布置影響;文中所用的承載力和變形計算方法是可行的。化爆試驗表明,高強混凝土構件的動載抗彎性能能夠滿足防護結構的要求。The main factors including concrete cover and prestressing levels which may have influence on the fire resistance of the simply - supported slabs are examined. the deflection and prestress are presented. from the results of tests, the fire endurance of the simply - supported slabs are given
在簡支板的火災行為試驗研究中主要考慮了普通鋼筋的保護層厚度和預應力度兩個因素,主要測試了構件的撓度變化及預應力的變化,並由此得出了其耐火極限。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。At last, the rigid modulus of elastic supports can be educed according to the deform numerical value of rigid plates which is measured in practice
最後,通過工程實際已測板的撓度,運用所編的程序,反算出剛性板板邊彈性支撐的剛度系數。Two matlab programs are provided to get the numerical results. calculating examples are presented to illustrate the important role of viscosity of foundation in limiting the development of deflection
並編制計算程序,求出數值解;對比彈性和粘彈性地基上矩形板的撓度解,指出地基粘性效應限制地基沖擊撓度的發展。In the analysis of the elastic local buckling strength of the stiffener ' s web, the elastic critical stress is analytically derived by solving the characteristic value problem involving the governing differential equation under the corresponding loading and boundary conditions
對于加筋板中加強筋腹板的局部屈曲,則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。On the basis, three elastic calculation coefficients of the two - way composite slab on three common boundary conditions are deduced and calculated by applying the classic elastic plane theory. in the thesis, the elastic design methods of pk prestressed composite two - way slab is explored and studied by the example. furthermore, it is also studied how to apply the yield - line design method to design the prestressed two - way composite floor slabs
本文以此為依據,應用經典彎曲薄板理論,採用李維法推導和計算了這種雙向樓板三種常見邊界下的撓度和內彎矩彈性計算系數,並在此基礎上通過算例探討了pk預應力雙向疊合樓板的彈性設計方法,同時還對其塑性鉸線設計方法進行了研究。It is difficult to estimate indent depth in theory. this paper presents two methods to estimate the relationship between dent depth and contact force, respectively amend method and deflection compensate method, which are developed by using a clear geometrical relation to express indent, incursion profile and deflection difference
本文以一種新的觀點,用一個明確的幾何關系來確定壓痕、壓頭與板的接觸面剖面及接觸中心點與邊界點之間的撓度差三者之間的關系,提出兩種近似預測接觸力與壓痕深度關系的方法? ?修正法和撓度補償法。Deflection of plate
板的撓度Through theoretical analyses in the article, the highly tough top - coal deflection before destroying is in inverse proportion to elastic mould, in direct proportion to tensile strength, and the conclusion that bigger deflection roof can ' t sufficiently transmit the compressible support to top - coal is drawn
通過理論分析,獲得了高韌性煤層煤體在破壞前的撓度與彈性模量成反比,與抗拉強度成正比的關系,並得出撓度較大的頂板不能很好把支承壓力傳遞給頂煤的結論。Based on the lithosphere rheology, we use a 3d method in space domain to calculate the flexural stress field of the continental lithoshpere in western china. in this thesis, the vertical variation of the flexural stress field is presented
本文在前人研究的基礎上,依據巖石圈流變學理論,在空間域採用垂直和水平受力的多個變剛度的三維有限差分方法來計算彈性板的撓曲,從而求得相應的撓曲應力場。Analyzing and researching in the results of the plate ’ s deflection and bending mo - ment from calculating a mass of examples by the program. the laws of interactions of plates and foundation with arbitrary boundary are summarized. namely, discuss the influence of the thickness of plates h, foundation ’ s parameters k, t, the load q and other factors on the deflec - tion and bending moment of the moderate - thick plates on two - parameter elastic foundation
利用該程序計算大量的算例,對所得撓度和彎矩的結果進行了分析與研究,並總結了各種邊界條件下中厚板與地基相互作用的規律,即探討了板的厚度h ,地基參數k 、 t以及荷載q等不同因素對于雙參數地基上的中厚板撓度及內力的影響。The side displacement of the glass plate center is larger or less than the glass plate thickness, for the 3d geometric size of the glass plate and the lateral load vary in a wide range. in other words, the mechanic analysis of glass plate belongs to large deflection or small deflection theory in thin plate theory
由於幕墻玻璃的三向幾何尺寸和橫向荷載集度可在較大的范圍內變動,玻璃板中心的側向位移,有可能小於或大於玻璃板的厚度,也就是說,幕墻玻璃的力學分析,既可能屬于薄板理論中的小撓度問題,也可能屬于大撓度問題。A sensing magnetic field and displacement type of giant magneostrictive microdisplacement actuator with the functional of sensing driving magnetic field and microdisplacement is developed, and the design theories and approaches being applicable this type of microdisplacement actuator are pointed out : a circular diaphragm type of flexible construction that acts as integration mechanism of microdisplacement transferring and sensing of giant magnetostrictive microdisplacement actuator is adopted, sheet flexure theory of elasticity mechanics and approach of finite element are applied to design and calculate it, corresponding deflection and analytic formula and distribution curve of stress are given, and the specific achieving approaches of measuring principle and magnetic field sensing function of driving field in giant magnetostricitive rod are pointed out the magnetic field sensing function of the actuator is used to practically measure driving magnetic field of actuator and to obtain the relationship of driving magnetic field and coil current, which is also analyzed and studied
其中,採用圓形膜片式柔性結構作為超磁致伸縮微位移執行器的微位移傳遞、感知一體化機構,應用彈性力學中的薄板彎曲理論、有限元方法對其進行了設計、計算,並給出了相應的撓度和應力解析式及分佈曲線;應用電磁理論給出了超磁致伸縮棒內驅動磁場的測量原理及磁場感知功能的具體實現方法,並利用執行器的磁場感知功能對其驅動磁場進行了實際測量,得出了驅動磁場與線圈電流之間的關系,並對其進行了分析和研究;對執行器內部的電磁路和偏置磁路結構進行了設計計算與實驗研究,為了減小驅動線圈的發熱,對其形狀進行了優化設計。Exact solutions are derived for the forced vibration of plate on elastic foundation to moving loads, which is based upon the use of the 2 - d fourier transforms to the motion equations and boundary conditions. following a series of deduction, a calculation programme by the methods of numeric integration in fortran is provided
由系統的運動方程出發,利用界面連續條件,運用積分變換方法對原方程及邊界條件進行了二維fourier積分變換,把偏微分方程組變成常微分方程組,求出加鋪層板系統在移動荷載作用下的撓度解析解。In this paper, firstly according to fourier heat conduct ~ quation, the analysical solutions of the temperature field of sfrc pavement structure were obtained and the finite element solutions were soluted by means of galerkin weighed residual methoded. secondly, based on the temperature field, the analysical solutions of the temperature stress of sfrc pavement structure were dissolved with westerguard - bradbury method, and then the finite element solutions were obtained by means of the finite element method. at last, the dynamic response of sfrc pavement plant structure affected by shock load with the finite element method was studied, and the deflection and stress response under shock load was calculated
其次,根據已求得的溫度場,利用威斯特卡德-布拉德伯利法求解鋼纖維混凝土路面板結構的溫度應力的解析解,然後又利用有限單元法對由溫度變化產生的溫度應力進行求解。最後,作者利用有限單元法分析了鋼纖維混凝土路面板結構在沖擊載荷作用下的動力響應,計算了由沖擊載荷引起的撓度響應及應力響應。分享友人