態動力學方法 的英文怎麼說
中文拼音 [tàidònglìxuéfāngfǎ]
態動力學方法
英文
gillan and dixon- 態 : 名詞1. (形狀; 狀態) form; condition; appearance 2. [物理學] (物質結構的狀態或階段) state 3. [語言學] (一種語法范疇) voice
- 力 : Ⅰ名1 (力量; 能力) power; strength; ability; capacity 2 [物理學] (改變物體運動狀態的作用) forc...
- 學 : Ⅰ動詞1 (學習) study; learn 2 (模仿) imitate; mimic Ⅱ名詞1 (學問) learning; knowledge 2 (學...
- 方 : Ⅰ名詞1 (方形; 方體) square 2 [數學] (乘方) involution; power 3 (方向) direction 4 (方面) ...
- 法 : Ⅰ名詞1 (由國家制定或認可的行為規則的總稱) law 2 (方法; 方式) way; method; mode; means 3 (標...
- 方法 : method; means; way; technique; process; procedure; plan; device; recipe; fashion; tool; maneuver
-
Part 3 : the paper set out from big system and coordination view, use the systematic dynamics method to analyse all - sidedly that the city expands the relation with various kinds of ecological factors, and natural factor discern mode of city develop, point out city ecological problems are production by improper use the environment ecological factor during city expand, it cause the problems production, such as the function of natural system disappearance or lose efficiency ; systematic circulation obstruct, material energy transform efficiency being low, and so on
第三部分:從大系統大協調觀出發,運用系統動力學方法全面分析城市擴展與各種生態因子的因果關系,及城市發展的自然因子識別模式,指出城市生態問題的產生是由於城市擴展對環境生態因子的不當使用,導致自然系統功能的缺失或失效,系統循環受阻,物質能量轉化效率低下等問題的產生。The content of this thesis comes from the fujian natural science found following research task 。 it studies on a space cantilever single beam attached to a moving support 。 inertia forces which are brought by the support ' s movement , are acceded to the equivalent initiative forces and the equivalent initiative moments 。 when we consider the relation of the forces and deformation , we change the method of material mechanical analysis to the elastic mechanical analysis 。 further more , we discusses the feasibility of the method which uses the multi - rigid - body discrete model to simulate the dynamic characteristic of a elastic body 。 first , the finite segment method is adopted to establish the models of the beam 。 based on kane ' s equations , dynamic math - model for the beam are derived 。 and by use of c - language and runge - kutta procedure , the computer - oriented procedure can give the whole responses of the beam 。 second , with compare to the numerical examples , the method which uses the multi - rigid - body discrete model to simulate the dynamic characteristic of a elastic body which is under the condition of movement is verified to be feasible 。
本論文為福建省自然科學基金后續研究課題,以已知支撐運動的單個空間懸臂梁為對象,在等效主動力與等效主動力矩中加入支撐轉動引起的慣性力,並在考慮力與變形關系時,用更一般的彈性力學分析代替材料力學分析,進一步研究用多剛體離散模型來模擬其動力學特性的可行性。首先,用有限段建立機械臂的多剛體離散模型,用kane動力學方法建立其動力學方程。並用c語言編制演算法程序,採用了四階runge - kutta積分程序求解微分方程組,給出構件的全部動態歷程。Multi - flexible body dynamics is introduced into crankshaft computing, and diesel engine crankshaft dynamics simulation model is established combined with finite element method and modal superposition method
摘要將多柔體動力學方法引入到曲軸計算中,並結合有限元法和模態疊加法建立柴油機曲軸動力學模擬模型。The very important works by the researchers in the modeling and control for flexible manipulators are introduced ; the equations of the non - holonomic constrain and dynamics are formulated. on the base of dynamic model function derived by the planar two - link flexible manipulator, the model function can be obtained by coordinate transformation ; at last the control scheme based on model of the system is put in to use to insure track desired trajectory of joint angle
在第四章中,首先,我們對柔性機械臂的動力學建模和系統控制問題做了比較全面的介紹;然後,運用lagrange方程並結合假設模態法建立了平面兩桿柔性空間機械臂系統的動力學方程。在此基礎上,通過坐標變換導出了以可測關節角為控制輸出變量的系統控制模型,基於此控制模型提出了柔性空間機械臂關節運動的動力學優化控制方案。The highly precise direct integration scheme is used for solving modal dynamic differential equation of the structure and a dynamic load identification method by the modal respondence is proposed
採用無條件穩定的精細逐步積分法求解結構的模態動力學微分方程,構造了通過結構的模態響應直接反求荷載列陣的迭代演算法。The contents of this paper include the following several aspects : ( 1 ) a model of the fractures leakage is built through counting and analyzing the wealthy geological records of hae field, and a model of the fracture water transporting is also built according to the fracture water condition of its recharge and its runoff and its discharge in hae field ; ( 2 ) this paper studies the chemical behavior and the migration parameters of the elenent sr2 + in ground water in hae field, the main contents include : the presence form of the element sr in ground water is analyzed by way of the rmodynamics ; the absorption mechanism that granite and sand stone absorbs sr element is analyzed based on theory and experiment test the diffusion parameters of the element sr in water and in granite and in sand stone are researched with laboratory experiment test ; the partition coefficient of sand stone and granite to sr is tested by the batch way
其研究內容包括以下幾個方面: ( 1 )通過對我國hae預選處置場豐富地質資料的大量統計和分析,建立了該處置場的基巖裂隙滲透模型。再根據hae預選處置場基巖裂隙水的補給、徑流、排泄條件及水位動態特徵,建立了預選處置場基巖裂隙水水運動模型。 ( 2 )對高毒性鍶元素在我國hae預選處置場地下水中的化學行為和遷移參數進行系統的研究,其中主要包括運用熱力學方法分析了鍶元素在地下水中的存在形態,利用理論分析與實驗測試相結合的方法分析了花崗巖和砂巖對核素鍶的吸附機制,採用室內實驗裝置研究了核素鍶在地下水中的擴散參數以及在花崗巖和砂巖中的本徵擴散參數,採用靜態批式法研究了鍶在砂巖和花崗巖中的分配系數。Comparing the fitted expression with the established theory expression of the angular velocity, the equivalent viscous damping coefficient is gained. the closed form algorithm of the state space method is employed to solve the system dynamic equation with time - varying coefficients. the dynamic problem of a linkage mechanism with four joints is taken as example to show that the presented models and methods are correct and practicable
引入求解線性微分方程的狀態空間法,並對其求解時變系統運動微分方程的具體步驟進行了推導;在此基礎上將實測獲得的運動副等效粘性阻尼系數代入系統動力學方程,求解后獲得了考慮運動副阻尼的平面彈性四連桿機構的模擬結果;結果表明運動副的阻尼在一定程度上對振動具有抑制作用。In this dissertation, the re - entry vehicle can be seen as a rigid body system composed of a shell of the vehicle and internal moving mass points, by applying the newton - euler ’ s method, the dynamical equation of mmcrv are derived and the control mechanism is analyzed according to the dynamical equations. several influence factors on the dynamical response of mmcrv is analyzed in detail
將殼體與內部活動質量體看成是一個剛體與質點系組成的多剛體系統,採用newton - euler建模方法完整地推導了變質心再入體的動力學方程,其結果顯示了內部活動質量體移動對再入體姿態的影響。And then, discussions have been carried out respectively on problems of the kinematics description being involved in the description method of floating coordinate system, the establishment of dynamics equations and the technology of modality comprehension etc
然後,分別對浮動坐標系描述方法中所涉及運動學的描述,動力學方程的建立和模態綜合技術等問題進行了討論。It is discussed the application of system dynamics methodology in project risk management, especially its features and advantages of in managing project risk dynamics
在此討論了系統動力學方法在項目風險管理中的運用,特別是在管理項目風險動態復雜性方面的特色和優勢。The precision duhamel integration solution for the linearization equation is also given from the theory of linear differential equation. the calculating results show that the new method can improve the calculation precision greatly. in fact, the truncation error is not limited by this method, it can arrive the precision according to the requirement
本文的主要工作有以下幾個方面: ( 1 )由於非線性項的存在,使得多數情況下難以得到非線性動力方程的解析解表達式,目前常使用數值積分方法來求解非線性動力學方程的解,但常規計算方法的計算精度不很理想,本文提出了含taylor展開項中高階余項的非線性動力方程的線性化數值計算方法,構造了瞬態線性化方程,給出了duhamel積分的表達式。Then the system can use automatic constraint violation stabilization method for differential / algebraic equations to get state, displacement, velocity, acceleration of multibody system in different time points under external force
該系統採用絕對坐標方法自動建立多體系統動力學方程,其形式為微分代數混合方程,即euler - lagrange方程。利用約束違約自動穩定方法求得多體系統在外力的作用下姿態、位移、速度、加速度。Using gyro measurements during periods of thruster firing, with thruster outputs, mass property identification is achieved through recursive least squares algorithms on the basis of the refined dynamics equation. the approach addresses the issue by segmenting the problem into two sub - problems which both allow closed form solution to reduce computation load
該方法利用衛星上的陀螺輸出和推力器控制指令作為演算法的輸入,在修正的衛星姿態動力學模型基礎上,推導了衛星質量特性在線辨識遞推最小二乘演算法,將質心位置和轉動慣量矩陣的辨識解耦以降低辨識演算法的維數,減少計算量。Besides, technology progress is an accumulating procedure and its influences in economics are being showed in a long period. for all these consideration, we choose dynamic system as our evaluating method, founding sd model. according to the feature of the bulk shipping company, the paper talks about technology progress economic beneficial from four aspects : shipping technology, transportation technology, personnel and management technology
考慮到這些問題,本文採用了系統動力學方法建立技術進步對干散貨航運企業經濟發展的動態sd模型,並針對干散貨航運業的特點,分別從船舶技術、運輸技術、職工素質和企業管理技術等方面系統地探討了技術進步的經濟效益,通過對先進技術在干散貨航運業的應用評價,測算其對企業經濟效益的促進作用。This paper examines the fluid dynamical characteristics of the duct flow in a swirlmeter by using the computational fluid dynamics approach
本文運用計算流體動力學方法研究旋渦進動流量計的流道流體動態特性。Further study is in < wp = 6 > demand. moreover, with a transient simulation, we calculated evaporation coefficients of argon under non - equilibrium conditions. the rudimental md results indicate that there is no notable difference between the evaporation coefficients from the non - equilibrium simulation and the condensation coefficients from the equilibrium simulation
論文還採用瞬態法研究了非平衡條件下氬的蒸發系數,模擬研究的初步結果顯示,非平衡分子動力學方法獲得的蒸發系數與平衡分子動力學方法獲得的凝結系數之間差距並不顯著,由於可比數據少,上述結果還有待于更多的模擬驗證。The sliding bearing is chosen as the research object, and its system dynamics model of the heat plane and agglutination state are found. the three - dimension failure surface of temperature - verity - load is put forward as alarm criterion. with this method, the developing trend of fault can be forecasted truly, then the veracity of fault alarm can be improved
本文首次將系統動力學方法用於機械設備的事故報警,並以滑動軸承為例建立了熱平面系統動力學模型和膠合狀態系統動力學模型,提出以溫度?速度?載荷三維失效面作為報警判據,可較為準確地預測故障的發展趨勢,提高事故報警的準確性。Under the direction of elastic - plastic statics theory, transient dynamics theory and structure mechanics theory, the means of numerical analyse is adopted in this thesis to study the security of existing tunnel. the thesis studies the contents as follovvs : ( 1 ) the bias pressure, vvhich is caused by the digging of new tunnel, deflects and deforms the lining of existing tunnel. the effect degree relates to tunnel space, construction method, topography and round rock
本文用數值分析的手段,對既有隧道的安全性進行了彈塑性靜力分析、瞬態動力學分析和結構力學分析,如下: ( 1 ) 、新建隧道的開挖對既有隧道造成偏壓影響,使得既有隧道發生偏轉和變形,從而對隧道襯砌產生不良後果,其影響程度與隧道間距、施工方法、地形和圍巖狀況有關。The dependence of superlattice thermal conductivity on period length is investigated by nonequilibrium molecular dynamics simulation
摘要採用非平衡態分子動力學方法模擬了超晶格的法向導熱系數隨周期長度的變化關系。For a class of linear systems or the systems containing a nonlinear recovering force, it is discussed how to make them become chaotic systems by adding a nonlinear feedback unit, and the parameters estimation method of the system is introduced
在系統參數估計的應用方面,討論了對於一類線性的或含有非線性恢復力的系統,如何通過加入非線性反饋環節使其處于混沌態。然後介紹了這種混沌系統的參數估計的符號動力學方法。分享友人