有限振幅 的英文怎麼說

中文拼音 [yǒuxiànzhèn]
有限振幅 英文
finite amplitude
  • : 有副詞[書面語] (表示整數之外再加零數): 30 有 5 thirty-five; 10 有 5年 fifteen years
  • : Ⅰ名詞(指定的范圍; 限度) limit; bounds Ⅱ動詞(指定范圍, 不許超過) set a limit; limit; restrict
  • : 動詞1. (搖動; 揮動) shake; flap; wield 2. (奮起) brace up; rise with force and spirit
  • : Ⅰ名詞1. (布帛、呢絨等的寬度) width of cloth 2. (泛指寬度) width; size 3. (姓氏) a surname Ⅱ量詞(用於布帛、呢絨、圖畫等)
  • 有限 : limited; restricted; finite; a little; not much
  1. We acquired the system ' s dynamic response when the satellite attitude was adjusted and the mode of the antenna. then modal analysis and dynamic analysis have been done to the satellite - antenna system by using the finite element analysis ( fea ) software of ansys. through the analysis we got the system ' s connatural characteristic, the amplitude - frequency characteristic of harmonic response, the power spectrum density of random vibration response, the maximal amplitude and resuming time of impact response

    其次藉助ansys元分析軟體,對系統進行了模態分析和動力學響應分析,獲得了不同天線結構參數下的衛星?天線系統的固特性,簡諧響應的頻特性,隨機動響應的功率譜密度,以及沖擊響應的最大值和恢復時間等。
  2. Iv ) revolute joint element, nonlinear spring - damper element, 3 - d 5 points contact element are applied to simulate the revolute restriction between two caterpillar boards, suspension nonlinear vibration, contact between wheels and caterpillar boards, and contact between caterpillar boards and ground are considered respectively. drucker - prager material is employed to simulate reinforced concrete

    4 、應用大度轉動約束單元、非線性彈簧阻尼單元、三維五節點接觸單元分別模擬自行火炮履帶板之間的轉動約束連接、懸掛非線性動及負重輪與履帶板之間的接觸和履帶板與地面的接觸問題;根據材料非線性理論,提出利用drucker ? prager材料建立土壤的非線性元模型。
  3. In the lowest order, for the propagation of solitons in an inhomogeneous dusty plasma composed by two kinds of dust grains with different masses, if the interface of two kinds of dust grains in an inhomogenous dusty plasma is discontinuous, the tra nsmision and reflection waves both can be described by the kdv equation

    2在非均勻塵埃等離子體中,對于小的、但有限振幅的長波動,孤子可用kdv方程(或kdv型方程)來描述,而且電勢孤子的傳播情況在定性上與離子等離子體中電勢孤子的傳播情況一致。
  4. Analysis software. the analysis show : the gyroscope effect to the flywheel rotor ' s and the shaft ' s vibration character under high rotate speed should be considered. at this time, the system ' s normal frequency is the function of rotate speed ; the amplitude passing through the resonance field can be lowered obviously by improving the effective damping of the electro - magnetic bearing

    建立了高速旋轉狀態下,採用磁軸承作支撐的飛輪轉子和轉軸的動力學模型,給出了元法在此問題中的具體應用,並利用i - deas元分析軟體具體分析了飛輪系統的共頻率、系統型,以及對偏心激勵的響應,分析表明:對于高速旋轉的飛輪轉子和轉軸,應考慮陀螺效應對其動力學特性的影響,此時系統的固頻率是轉速的函數;通過提高磁軸承的等效阻尼可顯著降低系統通過共區域時的
  5. The clues and techniques to improve the resolution of data processing are 1 ) removing the affection of near surface factors on data acquisition, including static correction and noise eliminating technique etc, 2 ) broadening the frequency band of pre - stack seismic data, including amplitude compensation and pre - stack deconvolution etc, 3 ) improving s / n ratio of high frequency and weak reflection signals through multiple coverage with high precision velocity analysis, residual static correction and high - order nmo, raising " dead line of high frequency reflection ", and 4 ) identifying post stack effective reflection frequency band, enhancing dominant frequency and so on

    主要包括:消除近地表因素對資料採集的影響,包括靜校正和噪音壓制技術等;疊前拓寬地震資料領帶,包括補償和疊前反褶積技術等;藉助高精度速度分析、剩餘靜校正和高次項nmo技術,通過多次覆蓋疊加,消除資料中隨機噪聲干擾、提高資料信噪比,尤其是高頻端反射信息的信噪比,改善高頻反射和弱反射信號信噪比,提高「高頻反射死亡線」 ;疊後反射頗帶識別、抬高優勢頻率等。
  6. 3. according to the principle of the finite element method, the research establishes finite element models of the vibration transportation mechanisms, some model parameters such as the frequency and vibration type are confirmed and validated by the modal analysis, then which analyzes dynamic - state response of the model and confirms the swing distributing of the models, thereby make the design of models precise. 4

    根據元法的理論,建立動機構的元力學模型,對該力學模型進行模態分析,通過模態分析確定拋秧機動形態和所需的頻率等參數;然後此基礎上再進行力學模型的穩態響應分析,研究該模態下機構的分佈,以確定模型設計的準確性。
  7. It is shown by structural seismic response of four wavelets that littlewood - paley wavelet is not suitable for structural seismic response, because structural response is too small, meyer wavelet is a better wavelet for structural seismic response, for it ' s structural response is agreement with the finite element method, and also harmonic wavelet, structural response under earthquake is a little bigger than finite element method, structural response under odd exponent wavelet is also bigger than finite element method, this method is very simple by wavelet transform, wavelet transform method is different from old methods, one is with which not only knows the effects of earthquake wave detail frequency - band on structural response, but also considers earthquake wave ' s non - stationary of frequency and time - domain value, another is the second mode shape and higher mode shape response that do n ' t attenuate so fast

    通過對這四種小波的結構地震反應分析研究說明: littlewood ? paley小波不適合於用來作結構地震反應分析,因為在littlewood ? paley小波下的結構地震反應太小,不符合實際情況;用meyer小波作結構地震反應分析比較合適,和元法的結果比較接近;也可以用諧波小波來作結構地震反應分析,只是在諧波小波下的結果略為偏大;單邊指數小波下的結構地震反應分析比元法稍大一點,它通過小波變換大大簡化了結構地震反應分析。用小波變換方法來進行結構地震反應分析和以往方法不同的是:它不僅可以知道地震波的具體頻率段對結構反應的影響,而且同時考慮了地震波的值非平穩性以及頻率非平穩性;另外與以前方法得到的結果差異的是,第二型及以後的高一點的型的反應沒以前的方法衰減得快。
  8. To study the acoustic unsteady combustion of srm, built the acoustic model of chamber. deduced the little amplitude sound wave 3d equation, used the finite volume discrete method to simulate. got the vibration model of three kinds of chamber

    為研究固體火箭發動機聲不穩定燃燒特性,建立了燃燒室內聲學特性分析的物理數學模型,推導了小聲波三維波動方程,採用體積離散方法進行模擬,得到圓柱型、四片翼柱彤和五片翼柱型藥柱三種燃燒室形狀聲學動基本模態
  9. Adopt the rigid conjunction reinforce of both line, the biggest flap fad still exceed limit, especially that high plait and self - provided train, horizontal flap is still serious, by research and decided to do a preparative box reinforcing experiment on the big bridge of yellow river, and anticipate the result would be more obviously

    採用雙線剛性連接加固,最大,特別是一些高編自備車,橫向仍然較嚴重,經研究決定在京廣黃河大橋上進行準箱形梁加固試驗,預計效果會更加明顯。
  10. Much of his work bears on the concept of parallel universes : evaluating evidence for infinite space and cosmological inflation ; developing insights into quantum decoherence ; and studying the possibility that the amplitude of microwave background fluctuations, the dimensionality of spacetime and the fundamental laws of physics can vary from place to place

    許多他的工作都含平行宇宙的概念:評估無大空間與宇宙暴脹的證據,發展對量子去相干現象的洞察,以及研究諸如微波背景輻射漲落的、時空的維度以及物理的基本定律可隨位置而變化的可能性。
  11. In order to research the application of nonlinear optical materials for optical limiting, four derivatives of alkoxy metal phthaloyanines were synthesized. the structures of the products were characterized by means of ir. 1hnmr spectra and elementary analysis

    為探索機非線性光學材料在光方面的應用,本論文合成了四種烷氧基取代的金屬酞菁化合物,並利用元素分析、紅外光譜、核磁共氫譜等方法,驗證了化合物的分子結構。
  12. Based on the analyzing of the dss ' s basic theory of tomography, an inversion scheme that can be described as the combination of the finite - difference inversion and ray inversion using traveltime, amplitude and gravity data is proposed

    在分析深地震測深剖面層析成像基本理論的基礎上提出了利用走時、和重力數據,通過差分反演和射線反演方法對地殼上地幔結構進行層析成像的研究思路。
  13. Under the horizontal earthquake action and wind force, aim at " the pure frame structure with rectangle columns ", " the pure frame structure with special - shaped columns ", " the frame - truss structure with special - shaped columns " and " frame - shear wall structure with special - shaped columns ", earthquake action analysis was done by the spacial finite element method through the changes structural parameter. analyzing systematically " structure vibration mode ", " vibration period ", " structure lateral rigidity ", " seismic action force ", " seismic response force ", " floor seismic shear force ", " lateral horizontal displacement of structure " and " members internal force ". results indicate : ( 1 ) based on equal area, the special - shaped columns replaced the rectangle columns, the structural lateral rigidity enlarges, the lateral displacement minishes obviously, the earthquake response increase slightly, the biggest increasing amount of frame columns axis - compress ratio is smaller than 0. 08. the whole aseismic performance of structure has improved ; ( 2 ) when the section ' s length and section ' s thickness ratio of special - shaped columns is smaller than 3. 6, the structure benefits to resist seismic action ; ( 3 ) the angle of horizontal seismic action with the whole coordinate is 0 degree, structure earthquake response is bigger, belonging to a control factor of structure aseismic design ; ( 4 ) the frame - truss structure with special - shaped columns and the " a " - brace has the biggest lateral rigidity ; ( 5 ) the frame - shear wall structure with special - shaped columns have bigger lateral rigidity and smaller displacement, members internal force enlarged just rightly, have much superiority of resisting seismic action ; ( 6 ) in the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ), aseismic disadvantageous building site ( iii type site ), adopting special - shaped columns structure system, should reduce possibly the building ' s self - weight in order to reduce the earthquake response ; ( 7 ) the response spectrum method of computing seismic response and the time - history analysis method have similar analysis result

    西安理工大學碩士學位論文在水平地震作用下,並考慮風荷載組合,分別對「矩形柱純框架結構」 、 「異型柱純框架結構」 、 「異型柱框一析架結構」及「異型柱框-剪結構」等四種結構體系,通過改變結構參數,運用空間元方法,進行地震作用計算。系統地分析研究「結構型」 、 「動周期」 、 「結構側向剛度」 、 「結構地震反應力」 、 「樓層地震剪力」 、 「結構側向位移」 、 「層間位移角」 ,以及「構件內力」 。結果表明:在等面積原則下,異型柱代換矩形柱后,結構剛度增大,側向位移明顯減小,地震反應力略增加,框架柱軸壓比最大增小於8 % ,結構整體抗震性能所提高;當異型柱肢長肢厚比小於等於3 . 6時,結構利於抗震;水平地震作用力與整體坐標夾角為0度時,結構地震作用效應較大,屬結構設計的控制因素之一;異型柱框一析架結構採用「人」字斜撐,側向剛度大於「八」字斜撐和「人一八」字混合斜撐;異型柱框一剪結構側向剛度大、位移小,構件內力增大適中,是一種抗震性能優越的結構體系:在抗震設防烈度較高地區( 8度)和抗震不利的建築場地( m類場地) ,採用異型柱結構體系時,應盡可能減輕結構自重,降低地震作用力;分別採用「型分解反應譜」法和「時程分析」法進行地震作用計算,兩種方法所得結果基本一致。
  14. Finite amplitude wave

    有限振幅
  15. The former adds a strong restriction to the latter, thus denoting that the subcritical instability easily occurs for a finite - amplitude disturbance in the real atmosphere. the new criterion has greatly improved the previous results

    該判據表明,在實際大氣中對于有限振幅擾動容易產生斜壓亞臨界不穩定,它大大地改進了以前的結果。
  16. Secondly, this thesis analyses and tests the dynamics characteristics of the frame. the first inherent frequency has been ascertained by dynamics characteristics tested, analyzed and finite element calculated, strongly supports us to choose the scheme of benfield frame vibration control

    其次,文章分析和測試了苯菲爾框架的動力學特性,通過測試分析和元計算確定了苯菲爾框架的第一階固頻率,為苯菲爾框架大低頻動的控制方案決策提供了力的支持。
  17. The numbers and amplitudes of both transimtted and reflected solitons from an incident soliton are given analytically for this case. if the interface of two kinds of dust grains is continuous, neglecting the reflection, the nonlinear dust - acoustic wave can be described by a kdv - type equation in the lowest order. the amplitudes, propagating velocities of these quasi - solitons for this case are also given analytically

    無論是分界面不連續變化還是連續變化,對于小的、但有限振幅的長波動,電勢孤子從質量小的塵埃等離子體穿過分界面進入質量大的塵埃等離子體,電勢孤子的將增大,速度將變快,反之,電勢孤子從由質量大的塵埃微粒組成的塵埃等離子體穿過分界面進入由質量小的塵埃微粒組成的塵埃等離子體,電勢孤子的將減小,速度將減緩。
  18. In order to research mechanical capability of the reinforced concrete beam with bonding steel plate, adopting separate method to establish finite element model of the reinforced concrete beam with bonding steel plate, using fem to study dynamical characteristics of the model, have got good results which can not be easily got using traditional resolution method, which can give reference to study dynamical characteristics of the reinforced concrete beam with bonding steel plate

    摘要為了研究粘鋼加固后鋼筋混凝土梁的各種力學性能,採用分離式方法建立了粘鋼加固后鋼筋混凝土梁的元模型,並用元方法對此模型先後進行了模態分析和簡諧集中載荷作用下的動力響應分析,得出了加固后鋼筋混凝土梁的前5階動模態和簡諧集中動荷載作用下粘鋼加固鋼筋混凝土梁底部開裂的極動載荷值頻率曲線,可為研究粘鋼加固鋼筋混凝土梁的各種動力特性提供參考。
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