beam curvature 中文意思是什麼
beam curvature
解釋
梁的彎曲曲率-
The load displacement curves and the ultimate strength of each member are presented. effects of beam length, radius of curvature and flexural - torsional rigidity on ultimate are considered
通過試驗研究，給出每個構件的荷載位移曲線和極限承載力，得到了曲梁承載力隨跨長、曲率半徑以及截面尺寸的變化規律。 -
Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account
依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型，對中國古代木結構中的典型構造如：柱腳在礎石頂面平擱簡支、柱架榫卯連接、柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究： （一）通過木柱石礎靜摩擦試驗，測定了柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律； （二）通過單柱承載力試驗，測定了古建築中木柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量； （三）通過柱架低周反復荷載試驗，測定了柱架的抗側移剛度、柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、柱架及榫卯的極限承載力和極限變形、及榫卯減振參數； （四）通過斗?低周反復荷載試驗和受壓試驗，測定了古建築木構件與木構件間摩擦系數，斗?抗側移剛度，斗?恢復力特性及滯回曲線，斗?抗壓極限承載力及受力變形規律； （五）通過抬梁式殿堂間架模型振動臺試驗，測定了殿堂木構架結構自振周期，地震反應振形、阻尼特性及阻尼比；按結構分層特點對柱腳、柱頭和斗?層上的屋蓋的地震反應採用多點同步測量，對柱根滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。 -
The equation for the quasi - continuous atom laser beam wave - function is given by schrodinger equation, the beam width, divergence curvature radius and quality factor were introduced to represent the atom laser beam whose transverse potential could be separated. for the conservative quality factor system in some direction, we can ge t the propagator of abcd formulation
本文在含時量子系統傳播子的abcd形式理論的基礎上，引入某一方向的束寬、發散角、曲率半徑和品質因子等光束傳輸參數來表徵橫向勢能滿足x和y分量相互獨立的原子激光的傳輸。 -
The position and size of the monochromator, focusing curvature radii and tilting angles of the germanium focusing monochromator under different different take - off angle, size and divergency of the second collimator and intensity loss due to the use of it were determined. the neutron flux at different wavelength, under different reflection and take - off angle of the monochromator and divergency of the first collimator, were given. the simulation on the aperture used for limiting beam size in front of the sample showed that, smaller the size of the aperture and further the distance from the aperture to the sample, greater the loss of the intensity and more serious the spread of the beam along vertical direction at the sample position which makes the practical sampling volume greater than expected
用蒙特卡羅模擬方法對中子應力衍射譜儀的設計方案進行了優化研究，提出了一系列可供參考的數據：確定了單色器的位置、尺寸、垂直聚焦單色器在不同起飛角下的聚焦曲率半徑和傾角；討論了第二準直器的尺寸和發散，以及使用第二準直器造成的強度損失；給出了在不同單色器反射面、起飛角、中子波長和第一準直器發散度的情況下樣品處的中子注量率，以及多種組合情況下譜儀的解析度曲線；對限束方孔的尺寸、距離樣品遠近對強度損失和測量中的影響做了深入研究。 -
The maximal load - carrying capability of the arch support is calculated by adopting mechanical model of curved beam based on its force analysis, and relationship between bearing capacity coefficient of small curvature arch support and radius and span of curved beam is gained based on supporting capacity comparison of curved beam and straight beam
採用曲梁模型進行了支架系統的受力分析，得到其最大承載能力；通過與直梁支架承載能力相比較，得到了小曲率拱型支架承載能力系數與曲梁跨度和半徑的影響關系。 -
Curvature model based many damage locations identification of reinforced concrete beam
基於曲率模態的鋼筋混凝土梁多點損傷位置識別 -
The whole piezolaminated curved beam is equivalent as a single layer structure, and the governing equation of piezolaminated curved beam with small curvature is derived based on one - dimensional beam theory
將壓電夾層圓形曲梁等效為單層結構，基於一維小曲率曲梁理論，建立其控制方程。 -
( 3 ) to discuss thereasonable section shape of the continuous composite beam. the works of this paperare as follows : ( 1 ) contrast the cracking course of the concrete beam and the composite beam, atthe point of the bending state of the beams, put forward the crack width mode : bending curvature 、 crack height 、 the distance between crack
據此，本文的主要研究成果如下: （ 1 ）通過分析、對比普通混凝土梁和組合梁負彎矩區裂縫出現、發展過程，以構件受彎狀態為出發點，提出了以彎曲曲率、裂縫高度、裂縫間距為主要參數的裂縫寬度計算模式。 -
The critical crack and stress put forward provides theoretic foundation for monitoring portal machine. 3. applying steady theory of board, studying the problem of early curvature, flexibility model, welding remaining stress, elastic transmutation and brace condition and so on, conclude that structure of beam is primary place where metal structure of portal crane lose stabilization and the break of main beam is result of losing partial stabilization of main board
文章提出的界限應力和臨界裂紋對于港口機械的監測提供了理論依據； 3 、運用板的穩定理論，探索了作為薄壁構件的門機金屬結構在失穩破壞中所涉及到的初曲率問題、彈性模量問題、焊接殘余應力問題、彈塑性變形問題以及支承條件問題等，得出了門機金屬結構發生失穩破壞的主要部位為臂架結構，且主臂架的折斷是由於受壓翼板局部失穩引起整體破壞； 4 、探討了焊接對結構承載的影響。 -
Abstract : numerically solving equations governing the variations of the beam size and the curvature of wave front in the logarithmically nonlinear media ( lnm ), the propagating characteristics of gaussian beams have been described in detail
文摘:根據對數型非線性介質中高斯光束的束寬和波陣面曲率變化所滿足的耦合方程，採用數值計算對高斯光束的傳輸特性進行了詳細的分析。 -
Based on the fiber element method, parametric analysis was performed on the behaviors of moment - curvature and lateral load - lateral displacement relationships for the composite beam - columns. the selected parameters were the axial load level, slenderness ratio, steel ratio, strength of the materials, etc. finally, simplified models for the moment - curvature and the lateral load - lateral displacement hysteretic relationships, as well as simplified formula for calculating ductility coefficient were suggested
用纖維模型法系統地分析了軸壓比、長細比、截面含鋼率、鋼材和混凝土強度等參數對m -和p -滯回曲線骨架線的影響規律，提出了壓彎構件m - 、 p -滯回關系模型及延性系數的確定方法。 -
Second, the mode fields of a strip waveguide and some slab waveguides have been simulated by applying finite - difference time - domain ( fdtd ) method. the curvature radius ; vicinity coupling ; transition loss and power attenuation of a s - shape bend waveguide have been analysed numerically by employing wide angle finite - difference beam propagation method ( fd - bpm ), as well as the coupling loss of optical fiber and waveguide. in addition, the framework of the s - shape waveguide laser has been
其次，應用時域有限差分法，結合波導模式理論對條形與平面波導進行了模場模擬;應用廣角有限差分光束傳播法，對s形彎曲波導的曲率半徑、鄰近耦合、過渡損耗、功率衰減以及波導與光纖的各種耦合損耗進行了數值分析，並在此基礎上，對s形波導激光器的結構作了初步設計。 -
Chapter 2 : using a so - called variance matrix, we studied the propagation and the focusing characteristics of the paraxial light beams. the quantities characterizing the gross features for a paraxial optical beam, such as the beam width, the divergence, the curvature radius of the wavefront, the complex beam parameter q. and the beam quality factor, are related by using variance matrix
第二章：闡述了常數折射率介質中光束的傳輸和聚焦，建立了表徵傍軸光束總的特徵的量，如：束寬、衍射發散角、波前曲率半徑、復光束參數q與變換矩陣的關系，得到了光束質量因子和變換矩陣行列式的定量關系。 -
Tests relating to pavements. measurement of a rolling load deflection. part 2 : determination of deflection and curvature values using modified behkelman beam
路面試驗.滾動加載撓度測量.第2部分:用改進的貝克曼量儀測定撓度和曲率值 -
The frequently used parameters such as the power in bucket ( pib ), the beam width, the curvature radius, the far field divergence, the m2 - factor, the rayleigh length and the kurtosis are calculated in term of the intensity moments
第二章用強度矩的方法研究了hchg光束，研究了hchg光束的pib系數、陡峭度在傳輸過程中的變化以及偏心系數b和厄米多項式階數m對光束質量的影響。 -
In chapter 3, the elegant hermite - cosh - gaussian beams as another special case in hermite - sinusodiol - gaussian family is introduced and its propagation properties through a first - order optical abcd system are investigated. an analytical solution of the elegant herimite - cosh - gaussian beam propagating through a first - order abcd system is derived, and correspondingly, the closed - form m2 - factor, the beam width, the curvature radius and the power in bucket are presented analytically. the numerical investigations are carried out and show that the m2 - factor of elegant hermite - cosh - gaussian beam is greater than that of elegant hermite - gaussian beams and less than that of hermite - gaussian beams approximately
本文得到的主要結果可歸納為：首次用強度矩的方法研究了hermite - cosh - gaussia （ hchg ）光束，得到了hchg光束的束寬、曲率半徑、 m ~ 2因子、瑞利距離等的解析表達式；用陡峭度和pib參數去衡量hchg光束的光束質量，找到了hchg光束在傳輸過程中影響光束質量的因素並得到了變化規律；證明了hchg光束在傳輸過程中的重心和對稱性都會得到保持。 -
It analyzes the dynamic response of many different damage cases of simple i - shape beam structure and discusses their influences to natural frequency and modal curvature. it is found that the natural frequency and modal curvature can be used in identifying the severity and location of structural damage respectively. dynamic response of some real beams are measured and compared to the results analyzed by computer, it is found that there are some differences between them and the main reason is the error caused by modeling
2 .針對土木結構中最為常見的梁式結構，對簡支工字鋼梁的多種不同損傷工況的動力特性進行了有限元模擬分析，研究了損傷對頻率和模態曲率的影響，發現固有頻率變化率和模態曲率的變化分別可以用於損傷程度和損傷位置的識別;在實驗室中實測了幾種工況的鋼梁的振動模態，發現實測結果與計算結果有一定的差異，分析其原因主要是模型誤差和噪聲影響。 -
Behavior and mechanism of concrete filled double - skin steel tubular ( cfdst ) beam - columns subjected to monotonic or cyclic loading were investigated. two kinds of cfdst section tubes were studied in this paper, that is, the outer steel tubes are circular hollow sections ( chs ) or square hollow sections ( shs ), while all the inner steel tubes are chs. based on systematic parameter analysis, simplified models were derived to predict the load - carrying capacities of the composite members, and simplified moment - curvature and lateral load - lateral deflection hysteretic models, as well as ductility coefficient were suggested
本文從理論和試驗兩個方面較系統地研究了圓、方中空夾層鋼管混凝土構件在單調加載（包括軸壓、純彎、壓彎荷載）下的力學性能和工作機理，以及其在往復荷載作用下的滯回性能，並在參數分析的基礎上，提出了圓、方中空夾層鋼管混凝土軸壓、純彎和壓彎構件承載力的實用計算方法和彎矩-曲率、荷載-位移滯回關系模型及延性系數的確定方法。 -
In this paper, the method combined with curvature mode shape, finite element method ( fem ), artificial neural networks ( ann ) and genetic algorithms ( ga ) is applied. the optimization of a taper trunk beam of variable cross section under impact load can be obtained on the base of considering the objectives of minimum gross mass and the condition of constrain of dynamic stress
本文採用了曲率模態、有限元、神經網路和遺傳演算法相互結合的方法，對承受沖擊載荷作用的變截面懸臂箱型梁，在動應力滿足材料許用應力的約束下，以質量最小為目標函數，做了優化設計方面的研究。 -
The conclusion is given as follows : 1. the curvature mode is rather sensitive to the damage of structure. it is more sensitive than frequency and displacement mode and can be used to locate the damage of structures like a beam, and it is also sensitive to several damage
我們得到以下結論： （ 1 ）曲率模態是結構損傷識別的敏感標識量，曲率模態比頻率和位移模態對損傷更敏感，可以用曲率模態檢測梁式結構損傷的位置，且曲率模態對多處損傷部位敏感，各處損傷部位之間不相互影響，符合實際檢測需要； （ 2 ）曲率模態對結構的損傷程度也可以進行定性分析。
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