縱向振 的英文怎麼說
中文拼音 [zōngxiàngzhèn]
縱向振
英文
fore-and-aft vibration-
During helicopter slung - load flight, the main flight quality modes include : phugoid, dutch roll, longitude and latitude slung - load oscillation. according to the ads - 33e - prf specifications, the flight stability qualities had been evaluated
直升機機外吊掛飛行過程中，體現飛行品質的運動模態主要為荷蘭滾模態、縱向浮沉振蕩模態，以及吊掛物橫向、縱向振蕩模態。The main original work is as the followings : 1. longitudinal vibration of an integral pile in an uniform soil with end bearing boundary or elastic bottom boundary undergoing vertical harmonic load is theoretically investigated
主要工作如下： 1 、分別對均質土中完整端承樁和彈性支承樁在垂直諧和激振力作用下的縱向振動特性進行了研究。It utilizes two boltclamped langevin transducers with unanimous frequency characteristic which convert vertical vibration to flexural traveling wave. they are arranged on the place of a elastic pipe to generated traveling - wave. when the traveling - wave propagate, the particles on the elastic pipe traverse an elliptic trajectory, materiel is transported by friction or acoustic streaming
利用兩套頻率特性一致並以縱向振動方式工作的夾心式換能器，通過合理的布局在導管中激勵出行波，使輸送管管壁質點產生橢圓運動，從而利用摩擦或在液體中產生聲流來實現固體及液體的傳送。A study on longitudinal vibration behavior of inhomogeneous pile embedded in layered unsaturated soils
考慮樁土耦合作用時彈性支承樁縱向振動特性分析及應用Doubting the resonance condition of the longitudinal vibration of the sucker rod string introduced by apirp11l and improving of the mechanical modeling
抽油桿柱縱向振動共振條件的質疑與力學模型的修正Longitudinal vibration velocity with different diameter metallic rod
不同直徑金屬桿中縱向振動聲速研究With the consideration of the vertical wave effect of soil and soil - pile interaction, an approximate analytical solution to vertical vibration of pile system with variable impedance in visco - elastic layered soil is developed. a simplified and practical mathematical model for interaction between soil layers is proposed, and its applicability is theoretically investigated. based on this model and by using laplace transforms and the transmit property of impedance function, the analytical expression of the impedance function and solutions of the displacement and velocity response function in frequency domain and in time domain at the pile head are derived
4 、從三維軸對稱土模型出發，對考慮樁土耦合作用、土層層間聯系以及樁周土豎向應力梯度變化條件下的成層粘彈性土中完整樁及變阻抗樁系統縱向振動問題進行了研究，提出了成層土中變阻抗樁系統縱向振動問題的近似解析解法和樁周土層層間相互作用的簡化而實用的數學模型，並利用拉氏變換和阻抗函數的傳遞性，獲得了成層土中任意段變阻抗樁樁頂阻抗函數的解析表達式，以及樁頂速度導納和時域速度響應解析解和半解析解。The results show that the longitudinal velocity reduces with transverse vibration and also reduces with the dimension of the section increasing, while the length of the rod is the same
結果表明，橫向振動使得振動系統中縱向振動的傳播速度減小；同樣長度的桿，截面增大時聲速減小。Lateral vibration of pile groups in layered soil
考慮樁土相互作用效應的樁頂縱向振動時域響應分析Time domain axial response of dynamically loaded pile in viscous damping soil layer
樁與粘性阻尼土耦合縱向振動時樁頂時域響應研究The longitudinal stresses in the tunnel structure calculated by using the model of tamura & okamoto are obviously greater than the stresses in transverse direction obtained by using two dimensional finite element analysis. it is proposed that the axial and bending stresses should not be ignored for the underground structural design
計算結果表明，由彈簧質量模型算得的地下結構在地震作用下縱向振動和橫向振動產生的縱向和彎曲正應力及剪應力明顯高於由二維平面有限元算得的橫向平面內產生的正應力和剪應力，由此可見軸向應力和彎曲應力是地下結構抗震設計中不容忽視的因素。2. under the condition that the layered soil surrounding pile can be simulated with general voigt model or general maxwell model, the mathematical equations for longitudinal vibration of a pile with self - viscosity is established in the form of integral transformation, and the corresponding solution is obtained by using impedance function
2 、分別建立了樁側土為廣義voigt模型和廣義maxwell模型條件下考慮樁身材料阻尼的成層地基中樁縱向振動的積分變換形式定解問題，並採用阻抗函數遞推法得到了相應解。A quasi - analytical solution to soil - pile interaction in longitudinal vibration in layered soils considering vertical wave effect on soils
成層粘彈性土中樁土耦合縱向振動時域響應研究Design of wide - band longitudinal mode piezoelectric transducers with impedance matching layers
具有阻抗匹配層的寬帶縱向振動壓電換能器設計Based on the solutions proposed herein, the longitudinal vibration properties of an integral pile in a uniform soil or layered soil, a pile with variable sections or variable modulus in a uniform soil are discussed respectively. the influence on the curves of complex stiffness, mobility and reflection wave of pile caused by soil modulus, the degree of pile defects, and the length and location of pile defects are emphatically discussed. 3
利用所得解分別對均質土中完整樁、成層土中完整樁、均質土中變截面樁和均質土中變模量樁的縱向振動特性進行了分析，重點討論了土層模量變化、樁身缺陷程度、缺陷段位置、缺陷段長度等因素對樁頂復剛度、速度導納和反射波曲線的影響。The compound transducer consisting of a longitudinal vibrator and a flexural circular plate combines the high energy and efficiency of the former and the low impendence and wide spreading scale of the latter
縱彎復合空氣換能器由縱向振動夾心式換能器與彎曲振動薄圓盤組成，具有縱向振動換能器的高效大功率和彎曲振動圓盤的低輻射阻抗、大輻射面積等特點。Then the dynamic model of saturated soil layer caused by pile longitudinal vibration is founded. incorporated wave propagations into saturated soil layer, the characteristics of soil resistance factor and the mechanism of the radial damping are analyzed, as well as distributions of shear stress and pore pressure in saturated soil caused by pile vibration
然後利用上述解析解分析了飽和土層復阻抗，並從飽和土波動理論出發，建立了樁縱向振動引起的飽和土層振動模式，剖析了輻射阻尼產生機理，研究了樁縱向振動引起的飽和土層中剪應力及孔隙水壓力分佈。Analytical solutions for lateral vibration of pile in layered soils considering shear deformation
成層土中粘彈性樁縱向振動分析及工程應用Analytical solution of horizontal vibration for single pile in double - layer soils considering shear deformation
成層非飽和土中樁的縱向振動特性分析Secondly, on the basis of the theory of rayleigh - love bar, the longitudinal vibration of a large diameter end - bearing pile in saturated soil is investigated considering transverse inertial effect. the vibration of pile considering transverse inertial effect is different from the one not considering this effect significantly at a smaller slenderness
2 、根據rayleigh - love桿理論，計及樁身的徑向變形，研究了飽和土中考慮橫向慣性效應的大直徑嵌巖樁縱向耦合振動理論，分別在考慮與不考慮橫向慣性效應下，比較了大直徑樁縱向振動的特性。分享友人