梁振元 的英文怎麼說
中文拼音 [liángzhènyuán]
梁振元
英文
liang zhenyuan-
In tins paper, a new type of standing - wave linear usm with square - ring vibrator was presented, which had two contact surfaces and a support structure with four flexure hinges for the power output
摘要利用有限元分析軟體對方環形直線駐波超聲波電動機的振子進行了動態設計,提出了一種環梁式雙接觸面的振子結構,該振子採用柔性鉸鏈與支撐結構連接,實現力的輸出。Using large - scale current finite element software algor, the author builds 3d finite element models for the five project, and analyzes flexural, temperature deform and natural frequencies of the five guideway girder projects
運用大型通用有限元分析軟體algor ,對五種可能軌道梁結構方案建立有限元空間分析模型,進行撓度、溫度變形及自振特性的對比分析。In this paper, at the cut - in spot of beam active vibration control and use the pzt material as the drive component, the main research works can be summarized as follows : 1 ) using the finite element theory, a general finite element formulation of piezoelectric media is derived, the direct and converse piezoelectric effects are considered in the formulation
本文從梁的振動主動控制研究為切入點,利用了pzt材料作為驅動元件,作了如下幾個方面的研究: 1 )利用有限元理論,考慮壓電材料的正、逆壓電效應的影響,導出了機電耦合壓電元件的有限元方程。In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology
為使二維振動傳感器在兩主軸方向的靈敏度大致相同,敏感元件採用高度對稱的四梁結構,其中每個軸向上均採用帶折疊梁的雙側叉指電容結構,採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件,具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算,並利用有限元法進行了模擬分析,根據模擬結果得出了優化參數;在確定敏感結構的基礎上,研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析,利用差動測量技術得到由振動引起的微小電容變化量,經c - v介面電路進行相位調制處理,然後通過解調輸出與加速度成正比的電壓信號。Vibration analysis of beam using continuous element methods
梁結構振動分析的連續單元法Taking natural frequency and mode as damage principle, damage detection is studied as optimal problem based on genetic algorithm, and damage indices, symmetry and precision in the damage detection is discussed. numerical simulation of the damage detection of offshore platforms using genetic algorithm proves the feasibility of genetic algorithm in damage detection of large structure ; program all the process of genetic algorithm in damage detection into damage detection system
以實測的固有頻率和振型為診斷依據,將損傷診斷問題歸結為優化問題,採用遺傳演算法加以研究,以10單元固端梁的損傷診斷為基礎,討論了診斷中出現的損傷指標,損傷對稱性和變量精度等問題;將遺傳演算法的損傷診斷應用於海洋平臺,驗證了遺傳演算法用於大型結構損傷診斷的可能性;並用matlab將遺傳演算法應用於損傷診斷的全過程編製成損傷診斷系統。Greatest virtue of the method is always combined with practicality ( wind record is real, site of record is real, the site of bridge is real ), while the method for calculation of buffeting response is a ripe one ? inite method. the method for simulating natural wind field is convenience and workable
該法的最大特點是始終與實際相結合(風速記錄是實際的、記錄的地點是實際的、選擇的橋梁是實際的) ,而分析抖振響應的計算方法是成熟的?有限元法,模擬風場的方法方便、可行。Based on the results of previous researchers, the following instigations have been carried out in this paper : ( 1 ) employing a reasonable local resonance model which can accurately embody the heat - generation behavior due to resonance and vibration - heat mode in delaminated region, the dynamic response and temperature distribution in the small delamination region of a laminated beam are formulated. influence of the excitation frequency on the temperature gradient formation is analyzed numerically, and several meaningful conclusions are drawn. ( 2 ) for laminated plates with delaminations, due to complexity of the analytical solution, the finite element method is employed to analyze their temperature distributions and satisfactory results are also obtained
本文在前人研究的基礎上,對此方法進行了進一步的探討,主要做了以下的工作: ( 1 )選取合理的、能夠準確反映由共振而產生熱量的行為的局部響應模型,以及合理的振動熱模式,推導了一維層合梁小脫層區域的振動響應及梁的溫度分佈,並編製程序計算了該層合梁在激勵一段時間后的溫度分佈趨勢,分析了激勵頻率對溫度梯度形成的影響,得到了一些有意義的結論; ( 2 )對於二維層合板,由於解析解的形式異常復雜,本文採用有限元計算軟體對其溫度分佈進行了分析,也得到了較為滿意的結果。Piezoelectric elements were pasted on / under the cantilever beam where stress was the maximum or sub - maximum as actuators to control the vibration of the cantilever beam
在懸臂梁振動時應力最大或次最大處的上、下表面同位元配置壓電片,作為抑制懸臂梁振動的致動器。Epdm colored granule is not only used in the track and field racetrack, all kinds of court, universities, middle and primary schools, stadium, still used in the slipresistance passway around the swimming pool, gymnasium, overpass, underpass, protecting such numerous respects as the place, ward, activity of disabled person and training court, distribution room, computer room of the army, the bathroom, kindergarten, nursery bottom game, etc
三元乙丙橡膠可用於製造耐熱輸送帶蒸汽膠管耐化學品腐蝕的密封製品極適用於橋梁碼頭軌道枕墊等緩沖及減振材料各種防水材料各種膠板和護套等它又是電線電纜的良好絕緣材料,特別適用於高中壓電纜還可製造各種汽車配件。Basing on rc simple supported beam the study of the paper is modal analysis using the finite unit software ansys, and the relationship among the transformation of vibration frequency, value of attached load, position of attached load, degree of damage, position of damage is discussed
本文利用大型有限元軟體ansys針對工程常用的鋼筋混凝土梁橋進行了模態分析,討論了振動頻率的變化與附加荷載大小、附加荷載位置、破損程度、破損位置之間的關系,研究了混凝土梁橋從完整階段到破壞階段振動頻率的變化規律。Vibration analysis and fem model of hollow circular beam with constrained damping layer
圓形空心截面約束層阻尼梁整體單元建模與振動分析The thesis is aimed at presenting a procedure to establish a baseline finite element model of the qingzhou cable - stayed bridge over the ming river, fuzhou, china that was newly constructed. its main span length of 605m is the longest in the world among the completed composite - deck cable - stayed bridge. the proposed procedure includes several tasks : initial finite element modeling base on the design drawings, field loading tests and ambient vibration tests, and finite element model calibration with the test results
本文以主跨605m的結合梁斜拉橋? ?青洲閩江大橋為背景,首先根據設計圖紙建立該橋完整的初始空間有限元模型,然後根據通車前現場靜力試驗和環境振動試驗結果對初始有限元模型進行校正,通過參數的調整使模型靜、動力計算結果與實測值吻合。One self - anchored suspension bridge is the subject investigated, the finite element program " midas " is adopted to establish the spatial computation model of the suspension bridge, and the subspace iteration method is used to calculate the natural vibration frequencies and modes of the bridge, the bridge ' s dynamic property and rigidity feature are discussed with the computed results
摘要以某自錨式懸索橋主橋為研究對象,採用midas有限元程序,建立了該橋的空間力學計算模型,利用子空間迭代法計算了該橋梁結構的自振頻率和振型,結合計算結果對橋梁的動力特性和剛度特點進行了討論。Using commercial fea software, computer simulation is carried on the characteristics of the resonator and the pressure sensitivity for several silicon / silicon nitride beam structures
應用有限元分析軟體,對硅梁及氮化硅梁的多種結構,進行了計算機模擬,分析了熱激勵諧振器的特性以及壓力敏感特性。The chief executive appoints mr c. y. leung as the convenor of the executive council, for a two - year term, succeeding dr s. y
行政長官委任梁振英先生接替鍾士元博士出任行政會議召集人,為期兩年。Then, the modal analysis of two differently typical biomimetic wings are conducted and their modal parameters as nature frequency and vibration modes are obtained. as a result, the plane - structure wings with shell elements for fmav is not ideal comparing with the truss - structure wings composed by shell and pipe elements
利用ansys軟體對兩種結構類型的仿生翼進行模態分析,得到其低階固有頻率及振型等模態參數,並由結果指出純殼單元平板結構作為微撲翼飛行器的機翼不夠理想,而採用梁單元和殼單元的復合結構是設計微撲翼飛行器機翼的一個方向。We build some flexible projecting beam finite element modal with different crack. through studying vibration characteristics of different flexible projecting beam modal, what has different length crack on different position, we can research tie influence of the position of crack and the length of crack. then we make an experiment on the vibration of the flexible projecting beam
為了討論裂縫所處位置、裂縫長度對柔性懸臂梁振動特性的影響,在樑上選取了7個不同位置,並在每個位置上設定了7種裂縫長度,建立了49根的柔性懸臂梁的有限元模型。In this thesis, the internal force and transfiguration of the double reticulated dome under different load combination are studied ; the linear and nonlinear analysis are separately performed ; compare the difference between space girder element and space truss element ; at last analyze the dynamical response under seismic action. the horizontal seismic response of double layer oblate lattice shell is analyzed by using step - by - step integration procedure. the effect of some parameters such as exterior load, different support conditions and damping ratio on the dynamic internal forces and dynamic properties is studied
本文旨在研究雙層球狀網殼結構在各種載荷組合下的內力和變形,分別進行了線性和非線性靜力分析;進行了空間梁單元和空間桿單元兩種計算模型的比較;最後進行了在地震荷載作用下的動力反應分析,動力分析中用子空間迭代法得出了這類空間結構的動力特性,用時程法中的振型疊加法分析了結構在水平地震作用下的動態響應規律。Based on guyed mast fem model of 4 - node space cable element and space beam element, the method to analyze along - wind induced nonlinear oscillation in the time domain is established, which breaks the traditional analysis in the frequency domain using stochastic theory on the linearization premise. and the results of imitation analysis reflect the essential character of guyed mast
在將桅桿結構離散為空間四節點索單元和空間梁單元的計算模型的基礎上,提出了桅桿結構順風向風振響應的非線性時域分析方法,突破了傳統的用隨機振動理論對桅桿結構進行頻域分析的方法,模擬分析結果表明能夠反映桅桿結構的基本特徵。分享友人