邊界層振動 的英文怎麼說

中文拼音 [biānjiècéngzhèndòng]
邊界層振動 英文
boundary layer oscillation
  • 邊 : 邊Ⅰ名詞1 （幾何圖形上夾成角的直線或圍成多邊形的線段） side; section 2 （邊緣） edge; margin; oute...
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 層 : i 量詞1 （用於重疊、積累的東西 如樓層、階層、地層） storey; tier; stratum 2 （用於可以分項分步的...
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 邊界 : boundary; frontier; border; borderline; edge range line; periphery
  • 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
  1. The main work includes : based on biot ' s dynamic consolidation equations, by the method of integral transform and matrix transfer, two - dimensional consolidation of layered saturated soils is studied. then, the general integral solutions of stress ( including pore pressure ) and displacement ( including fluid flow ) of any point were obtained under harmonic vibration loads according to staunch boundary condition. second, a program to verify the correctness of this dissertation is developed

    主要工作有：本文根據biot平面動力固結方程，運用積分變換和矩陣傳遞的方法，研究了成層飽和地基的二維biot固結問題，根據下邊界為不透水基巖的邊界條件，獲得了地基表面作用簡諧振動荷載時，任意點應力（包括孔壓） 、位移（包括流體流量）的一般積分形式解。
  2. The research is presented based on the classical laminate theories for special boundary conditions and few papers have been formulated based on higher - order laminate theories with various cases of boundary conditions. the paper will create the structural - engineering program with mathematica to solve the problem of composite laminated plates based on higher - order laminate theories with various cases of boundary conditions

    目前僅局限於有特殊邊界條件的古典板理論，很少有文章涉到各種邊界條件的高階板理論。本文將利用mathematica的計算環境，編制結構分析程序，在各種邊界條件下，應用多種板理論求解各向異性矩形層合板的振動控制問題。
  3. Extruded concrete curb technology was introduced in 20th congress icold held in beijing in year 2000, this method draw more attention for its improving the compaction of transition material, excellent performance of slope protection, and convenient construction. this extruded concrete curb technology was developed in ita dam construction in brazil, the ita method consists of building and extruded concrete curb by using an extruding machine before the construction of a layer of the transition material, then spread and level the transition material in layers inside the curb, and compact the layer by vib ' ratory roller horizontally

    巴西工程界在埃塔（ ita ）面板堆石壩建設中，借鑒道路園林工程中道沿機的擠壓滑模原理，創造性使用邊墻施工法，在每填築一層墊層料之前，用擠壓式邊墻機製作出一個半透水混凝土小墻，然後在其內側按設計鋪填壩料，用振動碾平面碾壓，合格后重復以上工序。
  4. The dissertation refers to comparatively full literatures in the field of vsc, and the development history and characteristics of vsc are summarized, and the elementary concepts, elementary definitions, elementary properties, elementary principles and design methods are particularly introduced, and the causes of the chattering phenomenon are systematically analysed, and the study status of the chattering phenomenon and the main methods to eliminate the chattering are elaborated. for the deficiencies of traditionary methods, three improved methods are developed, which are improved exponent reaching law solution, variable boundary layer solution and the solution by adding an auxiliary continuous control term. for uncertain linear systems, an adaptive fuzzy integral variable structure control stategy ( afivsc ) is put forward to eliminate the chattering around the sliding plane, which introduces fuzzy logic to soften the non - linear discontinuous sig nal in the control variable and utilizes adaptive theory to adjust output membership function according to how much the uncertainty of the system is

    比較全面地查閱了關于變結構控制理論的文獻，總結了滑模變結構控制的發展歷史和特點，詳細介紹了變結構控制的基本概念、基本定義、基本性質、基本原理以及設計方法；系統分析了變結構控制系統抖振產生的機理，並闡述了國內外目前對抖振問題的研究現狀以及消除抖振的主要方法；針對傳統抑制和消除抖振方法的不足，改進了傳統方法，得到了三種新的消除抖振的方法? ?即改進的指數趨近律法、可變邊界層法和附加連續項法；針對不確定性線性系統，在變結構控制策略中引入模糊邏輯和自適應理論來消除滑動平面上的抖振，提出了一種自適應模糊積分變結構控制方案（ afivsc ） ，利用模糊邏輯來柔化控制量中非線性不連續部分，採用自適應理論，根據系統不確定性大小在線調整模糊輸出量的隸屬函數，另外，鑒于模糊控制本質上是有靜差的，所以本文選擇了帶積分項的切換函數，由於積分項的存在使系統較正為無靜差系統。
  5. Just under this urgent consideration, based on the fact that self - oscillation can produce pulsation of flow, to influence the flow boundary layer, thus to increase convective heat transfer coefficient, it is necessary to devote to the mechanism of self - oscillation and apply it to a heat exchanger

    正是在這種迫切要求下，基於自激振蕩能產生脈沖流動而影響流動邊界層從而提高對流換熱系數來強化換熱的考慮，需要開展對自激振蕩的機理及其應用的研究。
  6. Simulation and experimental results show that the effect of variable boundary layer solution in eliminating chattering is better than the equal near rate control law, and the robustness against parameter change of induction motor is improved and the static and dynamic performance is desirable

    通過模擬表明：可變邊界層法削弱抖振效果優于等速趨近率法，系統在參數變化情況下能表現出較強的魯棒性，改善了電機的動態和靜態性能。
  7. An experimental investigation on the transition in the boundary layer of horizontal plane with and without single two - dimensional roughness elements has been carried out in the wind tunnel. the distribution in normal and stream - wise directions of intensity of t - s wave excited by vibrating beam was measured in every condition. neutral curves were obtained by measuring the growth of the t - s wave at the normal critical location along the stream - wise direction

    在風洞中對水平光滑平板以及加有粗糙元平板的邊界層轉捩進行了測量與研究，比較了不同情況下平板邊界層內由振動梁激勵生成的t - s波沿流向和法向強度的分佈規律，得到了相應的振型增長曲線以及中性曲線。
  8. On the basis of three - dimensional axially symmetrical soil model and taking consideration of vertical wave effect of soil layer, the interaction between visco - elastic layered soil and an integral pile or a multi - defective pile with arbitrary bottom boundaries and its engineering application is systematically studied in this dissertation

    本文從三維軸對稱土模型出發，較系統地對考慮樁周土豎向波動效應、任意樁底支承邊界條件下、成層粘彈性土中完整樁及變阻抗樁與土縱向耦合振動理論及其工程應用進行了研究。
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