顫振分析 的英文怎麼說
中文拼音 [zhànzhènfēnxī]
顫振分析
英文
flutter analysis- 顫 : 顫動詞(發抖) shiver; shudder; tremble
- 振 : 動詞1. (搖動; 揮動) shake; flap; wield 2. (奮起) brace up; rise with force and spirit
- 分 : 分Ⅰ名詞1. (成分) component 2. (職責和權利的限度) what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] (料想) judge
- 析 : Ⅰ動詞1. (分開; 散開) divide; separate 2. (分析) analyse; dissect; resolve Ⅱ名詞(姓氏) a surname
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Design and characteristics on wing of extreme big aspect ratio
大展弦比夾芯翼大攻角顫振分析Flutter analysis on aircraft for the condition of unsymmetrical stores
全機非對稱外掛狀態顫振分析Flutter boundary prediction ( fbp ) based upon sub - critical turbulence response analysis is an important research work in flutter test field of aircraft
基於飛機結構亞臨界響應分析的顫振邊界預測( fbp )技術是顫振試驗研究的重要課題。In this thesis, the theories of joint time frequency analysis and image processing are combined, and a new fbp method called stf is proposed. the characteristics of digital and application are investigated for stf
本文根據顫振試驗的原理和觀測信號特點,綜合運用聯合時頻分析和圖像邊緣識別理論,提出了一種顫振邊界預測的新概念? ?時頻共振( stf ) ,並完成了stf方法和演算法的研究。With this kind of element, panel flutter analysis can be performed not only for thin plates but for the middle - thickness laminates
由於min3單元計及了壁板的橫向剪切效應,因此這種壁板顫振分析方法不僅可以針對薄板,而且可以針對具有中等厚度的復合材料層合板。The numerical flutter analysis system was formed by the three - dimensional numerical simulation of the vibrating cascade flow combined with the structural dynamics analysis of vibrating blade
將振動葉柵三維流動數值模擬與振動葉片結構動力學分析相結合,建立了葉片顫振數值分析系統。The aim of this thesis is to analyze the panel flutter mechanism and establish a mechanical model for panel flutter analysis and this work is the basis of panel flutter control studies
本文的目的就是對壁板的熱顫振特性進行系統深入的分析和研究,為高速飛行器的壁板結構的防顫振設計和壁板顫振抑制的研究建立理論基礎。The three - dimensional flutter analysis in frequency - domain of suspension bridges and theirs flutter stability when construction is carried out in terms of dealing with the project of constructing a suspension bridge ? ancang jiang bridge, besides with other engineering projects
本文以瀾滄江懸索橋為工程背景,結合其他幾個工程實例,討論了三維顫振頻域分析方法和懸索橋施工階段的顫振穩定性問題。In the engineering background of a suspension bridge tender project, taking the bridge and the airflow as a whole system, the effectiveness of the surface in the flutter stability of the system is studied by a multi - mode flutter analysis approach
以某懸索橋設計方案為工程背景,把橋梁與氣流作為一系統,應用多模態顫振分析方法,研究了在主梁下風側設置翼板這種控制措施對改善該系統顫振穩定性的效果。The identification of flutter derivatives for bridge sectional model has long been a key issue in long - span bridge flutter and buffeting analysis
長期以來,橋梁斷面顫振導數的識別都是大跨度橋梁顫抖振響應分析中的重點和難點問題。As to the current problems existing in the identification for these flutter derivatives, the dissertation tries to trace the development in the identification for the past unsteady aerodynamic forces of long - span bridges. it also investigates the method for flutter and buffeting analysis and the flutter derivatives. based on the present methods used in obtaining the unsteady aerodynamic forces and flutter derivatives, and co - funded by a natural scientific fund from the nation and a key project fund from the railway ministry, the current research has attempted to develop a device which can be employed in the wind tunnel to test flutter derivative through a forced vibration method
鑒于目前橋梁斷面顫振導數識別的水平和存在的問題,本文通過對大跨度橋梁非定常氣動力、顫振分析方法及顫振導數識別方法的回顧和評述,基於現有的非定常氣動力和顫振導數的測試方法,在國家自然科學基金與鐵道部重點學科基金的聯合資助下,研究開發了一套在風洞中採用強迫振動法測試顫振導數的裝置。Analysis of panel flutter in high speed flight vehicles
高速飛行器壁板顫振的分析模型和分析方法At first, the finite element formulation is presented to determine the flutter characteristics of laminated panels at elevated temperature. then both the linear and nonlinear panel flutter characteristics are analyzed. the panel flutter boundaries are finally determined and the effect of temperature, airflow speed, etc, on the panel flutter characteristics is analyzed
為此,本文首先建立了復合材料壁板熱顫振的有限元模型並對受熱壁板的線性和非線性顫振特性進行了研究;最後確定了壁板的顫振邊界,分析了溫度、來流速度等因素對壁板顫振特性的影響規律。Abstract : this paper introduces bridge section model tests in the wind tunnel. it presents static forces on bridge section models. the effects of bridge fences, isolation belts and different model lengths on static forces are studied. the static and dynamic stabilities of bridge are analyzed. the results show the effect of bridge fence, isolation belts and different model lengths on static forces should be considered in wind load design
文摘:通過橋梁節段模型風洞試驗測量了橋梁的風力,研究了橋面護欄和隔離帶以及變模型長度對模型風力的影響,並分析了橋的馳振穩定性和顫振穩定性.試驗結果表明:設計試驗方案以及應用試驗結果時應考慮模型長度、橋面護欄及隔離帶的影響Then the steady and unsteady subsonic, transonic and supersonic viscous flows around airfoil and some aircraft are numerically simulated. the 3 - dimensional unsteady navier - stokes equations are solved using the implicit lu - nnd algorithm, with baldwin - lomax turbulent model. on the basis of simulating unsteady viscous flow, coupling the structure dynamics equations, the problems of static aeroelasticity and flutter are investigated for wings and elevator
在模擬非定常粘性繞流的基礎上,與顫振運動方程相耦合,分別對機翼和全機流固耦合現象中顫振問題進行了研究,準確求解跨音速顫振臨界速度,分析機翼和全機的從亞音速到超音速范圍的顫振規律,並研究分析了機翼飛行迎角變化對顫振速度的影響。Flutter stability analysis of long - span suspension bridges during erection
大跨懸索橋施工過程顫振穩定分析So, the correct prediction of the blade flutter is very important in the design and modification of the turbomachine
因此,建立葉片顫振分析預測系統對葉輪機設計和改型是十分必要的。The newmark method is used to solve the panel flutter equations in time domain. the linear flutter boundaries are determined and the effect of temperature on flutter boundaries is analyzed
編制了壁板顫振分析的有限元程序,採用newmark方法在時域中求解了壁板的線性顫振方程,確定了壁板的顫振邊界,分析了溫度對壁板顫振邊界的影響。Second, the structural dynamic equations for blades are introduced in this paper. through numerically solving the aerodynamics - structure coupled equations, a 2 - d unsteady viscous flow in a single cascade is investigated under flow - structure coupled conditions, and a preliminary analysis of the cascade flutter is prosecuted
其次,本文引入葉片結構動力學方程,通過數值求解氣動結構耦合方程體系,研究了氣固耦合條件下葉柵內的二維非定常粘性流動,並初步進行了葉柵的顫振分析。Static coefficients are defined to describe the static effect of wind on bridge, and the aerodynamic derivatives are used to describe the aerodynamic effect
靜力三分力系數用於描述風對橋梁的靜力作用,氣動導數是顫振和抖振分析方法的核心。分享友人