柱面性 的英文怎麼說
中文拼音 [zhùmiànxìng]
柱面性
英文
cylindricality-
It make the principle formula become simpler and more practical. by the attenuation regulation and distributing character of stress wave under the linear charge blasting, the paper bring forward the idea that the columniation stress wave can be regarded as cylinder stress wave, the end stress wave as spherical wave. the perfect stress attenuation formula in radical direction is established in complete elastic medium
根據條形藥包爆破應力波分佈特徵及衰減規律,提出了可將條形藥包爆破柱部應力波當作柱面波、端部應力波當作球面波處理的研究方法:建立了理想的完全彈性介質中球藥包和條形藥包爆破徑向應力衰減方程。As it can be expressed easily by argument equations, we use the conicoid as the criteria of points " classification. based on the point ' s normal and the adjacent field, corresponding to the conicoid equation such as plane, ball and cylinder, we search the points that fit the equation along the adjacent field. using this method, we realized the automatic classification of unorganized points
本文採用了可以比較方便地用參數方程表示的二次曲面作為數據點的分類標準,根據點的法向量以及其鄰域結點的各種屬性,對應于平面、球面、柱面等二次曲面,依據曲面方程的特點,從起始點開始沿鄰域深度優先遞歸尋找符合方程的數據點,實現了散亂數據點的自動分類。Of course, if the disk is right at the focal length of the objective lens, then the cylindrical lens does not affect the image and it is perfectly circular
當然,如果正好處於物鏡焦距位置,柱面鏡就不會影響到光電探測器上的成像,因而會獲得一個完美的圓性影像。For the regular curves, we find two killing fields for the purpose of integrating the structural equations of the p - elastic curves and express the p - elastica by quadratures in a system of cylindrical coordinates. for the star - like affine curves, we solve the euler - lagrange equation by quadratures and reduced the higher order structure equation to a first order linear system by using killing field and the classification of linear lie algebra sl ( 2, r ), sl ( 3, r ) and sl ( 4, r ). we solve the centroaffine p - elastica completely by quadratures
對于正則曲線的情形,我們發現了兩個用於求解p -彈性曲線的結構方程的killing向量場並用積分將p -彈性曲線在一個柱面坐標系中表示出來,而對仿射星形曲線的情形,我們用積分方法解出了歐拉-拉格朗日方程,利用killing向量場及線性李代數s1 ( 2 , r ) 、 s1 ( 3 , r )和s1 ( 4 , r )的分類將高階結構方程降為一階線性方程,因此我們用積分完全解出了中心仿射p -彈性曲線。Nonlinear dynamical behavior of shallow cylindrical reticulated shells
扁柱面網殼的非線性動力學行為( 2 ) the causation that the caustic phenomena of electromagnetic wave propagation in two - dimension concave reflectors occurs and the types of singularities in caustic fields are investigated, and the conclusion that there are two types of singularities ( fold and cusp ) in caustic fields in two - dimension concave reflectors is obtained ; by symplectic geometrical method, formulations of computing wave fields in and far away from caustic fields in two - dimension concave reflectors are deduced, and the results are plotted in pictures. ( 3 ) the cause of the caustic phenomena of electromagnetic wave propagation in three - dimension concave reflectors and the types of singularities in caustic fields is discussed, and the conclusion that there are three main types of singularities ( fold, cusp and swallowtail ) in caustic fields in three - dimension concave reflectors is obtained ; by symplectic geometrical method, the formulae of computing wave fields in and far away from caustic fields in three - dimension concave reflectors are deduced. particularly, the wave fields in ellipsoid concave reflector are computed, and the results displayed in special sections are given
論文主要包括三個方面: ( 1 )分析了凹面反射的焦散現象,給出了不同凹面反射的焦散圖; ( 2 )分析了二維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類,得出了二維凹面反射波動場焦散區奇性主要有折疊( fold )和尖點( cusp )兩種的結論,利用辛幾何方法構造了圓錐曲面反射波動場非焦散區和焦散區的通用計算公式,並給出了圓柱面、橢圓柱面及雙曲柱面反射的計算結果; ( 3 )分析了三維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類,得出了三維凹面反射波動場焦散區奇性主要有折疊( fom 、尖點kusp和燕尾k )三種的結論,提出了利用辛幾何方法計算三維凹面反射波動場非焦散區和焦散區的計算方法,並給出了三軸不等橢球體凹面反射波動場的計算結果剖面圖。Application of r - function theory to the problem of elastic torsion with trapezium sections
函數理論在梯形截面柱彈性扭轉問題中的應用The influence of side - crack on the elastic deflection of eccentric rectangular column
邊裂紋對矩形截面偏心柱彈性撓度的影響規律As both the meshing point and ball ' s center are on the given cylinder, a general method for developing the cam ' s profile is studied. it is proved that the profile of positive and negative transmission is unique if the face gear, the difference between face tooth number and ball number and the diameter of ball are the same. the concrete expression of meshing cam on given spatial cycloid profile, and the characteristics of the profiles are discussed
論文的主要工作包括: 1 、根據嚙合點和鋼球中心軌跡均在同一圓柱面上的特點,研究了給定端齒齒廓條件下求解凸輪齒廓的一般方法;論證了在給定端齒、齒差數和鋼球直徑相同的條件下,正負齒差嚙合齒廓的唯一性;討論了端齒為球面擺線時,凸輪齒廓的具體表達式,並研究了該齒廓的性質。On the basis of summarizing current fractal dimension algorithms, the random midpoint replacement algorithm was employed to obtain interpolating point according to the fractal features of remote sensing image, so the current widely used triangular prism method was improved
摘要在總結現有分形維數計算方法的基礎上,根據遙感影像的分形特性,利用隨機中點替代法獲取插值點,從而對目前普遍使用的三稜柱面法進行了改進。The stability behavior of kiewitt ' s suspen - dome was analyzed on the initial state. by the geometrical nonlinear finite element method, the equilibrium path is traced using the cylindrical arc length technology and incremental newton - raphson method. the influence of kinds of parameters is studied
採用非線性有限元理論,結合牛頓荷載增量法和柱面弧長法的跟蹤技術,對kiewitt型弦支穹頂結構進行了考慮幾何非線性的全過程分析;為了掌握各個參數對靜力穩定性的影響程度,進行了參數分析。The simulation results with real aviation remote sensing image show that the improved method effectively keeps the image fractal features and can obtain more accurate fractal dimension
對模擬影像及實際航空遙感影像進行模擬,結果表明:改進后的三稜柱面法較好地保留了遙感影像的分形特性,計算的分形維數也更為準確。The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system
本文從麥克斯韋旋度方程出發,建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程,詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置;推導了mur一階和二階邊界條件在圓柱坐標下的差分格式;給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術;最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場,並分析了天線的一些參數的變化對天線輸入阻抗的影響,得出了一些有用的結論。Air respiration shield is made by ploy carbonic acid injection material for its looking glass, so it does not allow wide range of eyesight but also no easy to break but to use
空氣呼吸面罩採用聚碳酸脂材料注塑料而成的臺柱面窗,不僅視野大,而且有良好的透光性,強度高,牢固耐用。Based on wind tunnel tests, wind pressure distributions on cylindrical shells with different aspect ratios were measured simultaneously in wind tunnel with rigid models under different terrain types and attack angles
摘要基於剛性模型的風洞試驗,在不同風攻角及場地條件下,對考慮不同長跨比的柱面殼體表面風壓分佈進行了同步測量。At last this paper also analyses special - shaped section columns subjected to biaxially eccentric loading using finite element program ansys5. 7. according to comparing of analytical results, the ductile behavior of r. c. t, l - shaped and " + " shaped columns are investigated
本論文最後採用大型有限元程序州sys5 . 7對上述幾種截面柱構件也進行了分析,通過比較計算結果,得出異形截面柱延性變化規律,並檢驗本論文所編制分析程序的可靠度。Therefore, based on the nonlinear whole process analysis of structure, the paper studies on the stability capability of cylindrical latticed domes
因此,本文從結構的非線性全過程分析入手,對單層柱面網殼的承載力進行了研究。As the research of this kind of connection is not enough in our country, this paper mainly discussed the behavior of rigid beam - to - column connection with t - stub
T形件連接的樑柱剛性節點在美國和日本有著廣泛的應用,然而在我國對這方面的研究並不充分。At last this paper analyses some special - shaped section columns subjected to biaxialy loading using finite element program ansys7. 0, compares of analytical results, investigates the ductile behavior and bearing capacity of special - shaped r. c. columns. the reliability of analytical program compiled in the paper is verified
本論文最後採用大型有限元程序ansys7 . 0對幾種異形截面柱構件進行了分析,通過比較計算結果,得出異形截面柱延性和承載力的變化規律,並檢驗本論文所編制分析程序的可靠度。The influence of geometric nonlinear to the structures ’ stability is discussed, and the response of the structures with initial imperfection is analyzed by the consistent modal method. the characteristic of endogenetic force of the cylindrical latticed domes and some advice for the design are offered in the conclusion
深入討論了幾何非線性對柱面網殼和柱面組合網殼穩定性的影響;最後採用一致模態法對結構的幾何缺陷敏感性進行分析,得出了柱面網殼和柱面組合網殼結構的受力特點和在設計中應注意的問題。分享友人