cyclic symmetry 中文意思是什麼

cyclic symmetry 解釋
循環對稱
  • cyclic : adj. 1. 周期的；輪轉的，循環的。2. 【化學】環狀的；【植物；植物學】輪列的，輪卷的。3. 組詩的；故事始末的。
  • symmetry : n. 對稱；勻稱；調和；勻稱美。 bilateral symmetry 左右對稱。 radial symmetry 輻射對稱。
  1. The result of the calculation for tip clearance is reasonable when it is compared with theory. two ways are put forward for convention of dimension of the turbine components from high temperature to low one, which is related with tip clearance, a simple example is used to illuminate that the two ways are useful, using the method of design optimization, axiisk and a blade of a certain turhine is analysed, it showes that the method of design optimization is feasible to be used for convertion of dimension of the turbine components. finally, ansys software is used to analyzed the variation of tip clearance with the method of cyclic symmetry analysis when engine works under the conditions of temperature and rotational speed, am using a new method to deal with thermal contact resistance in the calculation

    本文完善了計算渦輪葉尖間隙的簡化演算法程序，增加了程序的計算功能，並將其應用於某高壓渦輪進行葉尖間隙分析，所得結果與理論結果進行了對比，得出修改後的程序用於葉尖間隙計算是合理的；同時提出了與葉尖間隙相關的渦輪典型部件的冷、熱態的尺寸兩種換算方法，使用優化設計的方法進行了實例分析，說明了所提出的計算方法是可行的；最後應用ansys有限元軟體利用循環對稱的方法分析了某型發動機高壓渦輪在溫度場及離心力作用下的葉尖間隙在發動機工作過程中變化情況，並分析了計算中的接觸熱阻的處理問題。
  2. As the deformation caused by centrifugal force is beyond the small deformation range, the large deformation effect was also taken into account in the equation. two models are constructed, one is of shrouded blade and the other is of bladed disc. the static natural frequencies and dynamic frequencies ( under 3000rpm ) are calculated by the finite element method and cyclic symmetry technique

    針對葉片的結構特點，採用適應較強的三維八節點實體單元模擬葉片，建立葉片運動微分方程;葉片?輪盤系統在高速旋轉時，受到離心力作用，使葉片發生大變形，故在方程中考慮了幾何大變形的問題;為研究葉根輪緣之間的接觸狀態，建立了考慮葉根?輪緣接觸的有限元方程，利用拉格朗日增廣演算法來求解該方程，確定葉根輪緣之間的接觸面狀態。
  3. The results indicated that the centrifugal force reduces the localization ; when the young ’ s modulus of all blades are in the tolerance of 5 %, the blade - disc can regarded as an cyclic symmetry system

    結果表明，離心力對失調葉片輪盤系統局部化振動有減弱作用;所有葉片彈性模量在5 %誤差范圍的隨機失調系統，其固有頻率與非失調相差很小，即失調葉片?輪盤系統可以按照循環對稱結構進行模態分析。
  4. A simplify high pressure turbine ( hpt ) tip clearance model is analyzed with the cyclic symmetry method. research on the flow, heat and structure integration analyses is achieved in this paper. flow / heat analysis is done by fluent software, and heat / structure analysis is done by ansys software

    針對渦輪部件的結構特點，進行了適當的簡化，利用參數化設計思想建立了渦輪葉尖間隙計算模型，用循環對稱的方法分析了某型發動機高壓渦輪葉尖間隙在工作過程中變化的情況。
  5. Cyclic symmetry in blade - disc assembles is often destroyed by small differences in the individual blades ’ structural properties that result from manufacturing and material tolerance, this phenomenon commonly knows as mistuning

    葉片?輪盤的周期對稱性經常由於製造、材料以及非均勻磨損和其他因素被破壞，引起系統出現失調現象。
  6. A study of the property of generalized nonlinear unequal - power nj - th power y - squeezing and nj - th power h - squeezing on a new type of multi - mode superposition state of the equal - intensity of symmetry superimposition state with distinguishable two quantum states light field. it was found that two quadrature phase - components of state always present cyclic - changed symmetry - complementary relation ; besides we can abtain that under the condition when nj = n, the result of document 26 and document 27 is only a special circumstance, but the result in this thesis is generalized appearance

    結果發現：態， v恩）的兩個正交相位分量的廣義非線性不等冪次n _ j次方y壓縮及n _ j次方h壓縮效應總是呈現出周期性的對稱互補關系：另外，文獻26及文獻27中的研究結果僅僅只是本文的一般性理論結果在壓縮次數n _ j = n （ j = 1 ， 2 ， 3 ， … ， … ， q ）這一條件下的特例。
  7. The major content of this thesis is arranged as follows : qa study of the property of arbitrary high - power generdlized nonlinear equal - power n - th power y - squeezing and n - th power h - squeezing of multi - mode superposition state of the differ - intensity of nonsymmetry superimposition state with distinguishable two quantum states in the kind ( ii ). it was found that under certain conditions, two quadrature phase - components of state vj / [ ] b ) always present cyclic - changed symmetry - complementary relation ; and from this we can conclude that equal - intensity of symmetry superposition state with distinguishable two quantum states can present equal - power n - th power y - degenerate - squeezing and equal - power n - th power h - degenerate - squeezing appearance, and differ - intensity of nonsymmetry superposition state with distinguishable two quantum states can remove equal - power n - th power y - degenerate - squeezing and equal - power n - th power h - degenerate - squeezing appearance

    結果發現：態， v鏟）的兩個正交相位分量的廣義非線性等冪次n次方y壓縮及n次方h壓縮效應總是呈現出周期性的對稱互補關系；並且得出，強度相等的對稱兩態疊加是導致出現「等冪次n次方y壓縮簡並」及「等冪次n次方h壓縮簡並」的本質原因，而強度不等的非對稱兩態疊加則是消除「等冪次n次方y壓縮簡並」及「等冪次n次方h壓縮簡並」現象的有效途徑。
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