隨機海浪 的英文怎麼說
中文拼音 [suíjīhǎilàng]
隨機海浪
英文
random seaway-
Helicopters in action " is about to take you on an adventure around the world from sierra leone, where you ll participate in delivering humanitarian aid in the largest helicopter in the world, to miami for a wild ride in a black hawk helicopter intercepting drug runners. hold on while you swing through the air with five marines dangling from a rope attached to a ch - 46 flying over the atlantic and swoon as a cobra swoops low over enemy territory. try not to slip as you traverse 500, 000 - volt high wires
全天域電影直升機行動組將會帶你參與周遊列國的歷險旅程：在非洲獅子山你會乘坐全球最大型的直升機協助人道救援工作在美國邁阿密，你會登上黑鷹直升機截擊毒販又或者與五名美國海軍陸戰隊隊員一起乘坐ch - 46直升機，飛越大西洋上空，並在半空游繩而下或乘坐眼鏡蛇直升機在敵方領空低飛或登上直升機，跳上500 ， 000伏特高壓電纜上進行維修工程或屏息靜氣，緊隨獸醫在南非乘坐直升機在離地面3米的高度，向黑犀牛發射麻醉槍或乘坐直升機跳入驚濤駭浪中參與海難救援工作。The wave is subscribed by regular and stochastic wave theory. the wave force acting on the offshore platform is calculated by the morison equation
分別採用規則波理論和隨機波理論描述海浪模型，通過線性化的morison方程計算平臺承受的波浪力。On the basis of cybernetics through forecast roll and pitch of a ship and by adjusting the object ' s space position and keep its horizontal state without limit of actual sea state according to the control rules with the predictive value of ship ' s roll angle and pitch angle
應用控制理論通過預測隨機海浪擾動下船舶的橫搖、縱搖運動的搖角值，按照所設計的控制規律實現在不受實際海況限制的情況下調整船上物體的空間位置，使此物體保持水平狀態的目的。Especially for ship and ocean - platform structure, there are a lot of stochastic factors affecting their design, for example, wave, tidewater and wind which act on the ship surface are indeterminate ; material data and dimension data provided may be not completely consistent with that of real structure ; some hypothesis, for convenience and simplification, make the calculation model is not the same as the real structure
特別對船舶與海洋平臺等結構，影響結構設計的隨機因素很多，例如作用在船舶上的波浪、潮水和風荷載都是不確定的；結構中用的材料物理性能數據可能與提供的有所差異；名義尺寸也可能與實際結構不完全一致；計算中引進的一些假設，也會使計算模式與實際情況有所偏離等等。This paper applies ittc single - parameter ocean wave spectrum to simulate a random long - crested ocean wave according to statistics superposition theory and real - time simulate disturbance on the ship by random wave. it simulates roll and pitch of the ship in random wave in the time domain and gains roll angle ( t ) and pitch angle ( t ) signal of ship rolling movement
本文根據統計疊加理論，採用ittc單參數標準海浪譜模擬模擬實際的長峰波隨機海浪，進而實時模擬長峰波隨機海浪對船舶的隨機擾動，對船舶在海浪中的橫搖和縱搖運動進行了時域模擬，得到船舶搖蕩運動的橫搖角信號（ t ）和縱搖角信號（ t ） 。Sea wave high, pitching force, rolling force and rearing torque simulation algorithms are put forward
給出了隨機海浪波高、橫蕩力、橫搖力矩、艏搖力矩的模擬演算法。Simulating random movement of sea wave in the wave basin and making researchs into the action of sea wave on coastal and offshore structures could provide the reliable basis for engineering design and scientific experimentation
在實驗水池中模擬海上多向不規則波浪的隨機運動現象，進而研究波浪對海洋工程與港口建築物的作用，可為工程設計與科學實驗提供可靠的依據。In this dissertation, the progress in the researches of spatial coherence of random waves is reviewed. based on this, studies have been carried out for the statistical characteristics of crest lengths and their influence on vlfs
本文回顧總結了近年來國內外有關海浪空間特徵量統計研究的進展，並在此基礎上，開展了隨機海浪波峰長度統計特徵及其對海上結構物影響的研究。Then a simplified computational modal of damping isolation systems is established for a platform structure, and the relationships between the parameters of isolation layer and structural damping ratio, including their vibration - suppressed effect on the whole structure and the relative displacement of isolation layer are studied, and the simulation analysis under several representative load case of random wave force and earthquake affairs is performed. under random wave force, using complex mode theories, non - classically damp problems considering the interaction between the structure and wave, lying in deepwater, are studied. and the resolution solution of structural response are achieved. the results of calculating and analysing show that adding damping isolation to a jacket is an effective way to reduce vibration for offshore platforms
針對某一典型平臺結構，建立了海洋平臺結構阻尼隔振體系簡化計算模型，進行了波浪荷載工況和地震工況的數值模擬，研究了隔振參數與結構阻尼比的關系以及它們對結構整體和隔振層層間相對位移的控制效果，運用復模態理論研究了位於較深水位的固定式導管架海洋平臺在隨機波浪力作用下考慮結構與波浪相互作用時運動方程中非經典阻尼的解耦問題，獲得了結構響應的解析解。This paper presents a method of probability analysis in order to develop the general design and analysis methods for problems of the embankment stability under random storm wave actions as well as with random properties of the embankment medium. the major purpose of this study is carry out modellings of ( 1 ) probability analysis for the problem of seepage stability of levee projects ; ( 2 ) probability analysis for the problem of erosion due to washout sediments from the embankment ; ( 3 ) numerical analysis for coastal evolution due to beach erosion under energy actions of storm wave
本文根據598084號年浙江省自然科學基金項目和g59901號國家教育部回國留學人員科研啟動基金項目的部分研究目標和研究內容的要求應用概率分析方法研究了在隨機風浪荷載作用下和築堤材料隨機性影響下防護堤壩抗滲流、抗沖刷穩定性的分析計算模型；用數值分析方法研究了在浪潮能量作用下岸灘侵蝕造成海岸演變問題的數學分析模型。Abstract : the reflective characteristics of sea and sky background radiation, which have important effect on the infrared signature from flight vehicle above sea, are studied in the paper. the statistical distribution of wave facet directions is discussed, the effects of randomly riging and falling sea wave on the sea surface radiation and on the sun light reflection are also discussed. calculation methods of irradiance from sea surface radiation and reflected sun light on observation point are derived in the paper. finally a computation example is given, which shows the sea and sky background radiation has important effect on infrared characteristic especially in the front area of a flight vehicle
文摘:研究了對近海飛行體的紅外特性有重要影響的海空背景輻射的反射特性.討論了波浪面起伏隨機規律，隨機起伏對海面自身輻射及對陽光反射的影響，推演了此種隨機起伏波浪面的自身輻射及反射的陽光在觀測點形成的輻照度的計算方法.給出的算例結果表明，海空背景對飛行體的紅外特性尤其對其前半球的紅外特性有重要的意義Through the settling and analysis of these data, we find that the seabed sediments intensity appears heterogeneity on the plain and the profile under the action of wave loading, i. e., the random or periodic variation of seabed soil intensity in the plain, and hard soil layer in certain depth under the bottom
發現在波浪作用下，黃河口沉積物強度出現了非均勻化，即在平面上，沉積物強度呈現隨機性或間隔性變化；在剖面上，海底面之下一定深度范圍有硬層發育。Visualization techniques for ship motion in waves
船舶海浪中非線性隨機運動的可視化技術The power spectral density of ship ' s motion is calculated based on ocean wave energy spectrum, and the movement spectrums of the ship ' s random motion are calculated and created
根據海浪波能譜，計算了艦船搖蕩運動的功率譜密度和艦船的隨機搖蕩運動。Study on simulation of 3 - d random waves
三維隨機海浪模擬研究This paper brings up a predictive control system that makes the object keep horizontal state on the sailing ship in random wave
本文建立了隨機海浪作用下船上物體保持水平狀態的預測控制系統。By the simulation results, it is verified to have excellent performance. a class of uncertain nonlinear systems which can be transformed into strict feedback nonlinear systems is investigated based on feedback linearization approach of differential geometry. an adaptive robust controller with l2 - gain is proposed by using backstepping technique. the numerical method is given and it is proved to be practical by simulation results. lt is a more practical method to solve hji for a special nonlinear system because the problem to solve hji is very difficult in general case, and only get the approximate solution when it can be solved. an effective method to solve hji is presented for a class of nonlinear system which is ordinary
考慮到一般情況下，求解hji是非常困難的，並且也只能得到近似解，因此，在系統設計時，針對具體非線性系統的特殊結構以求解hfl是系統設計的一種行之有效的方法，基於以上考慮，對一類具有廣泛工程背景的非線性系統，提出了一種求解hfl的有效方法，便於實際應用。最後，從波能譜的角度，研究隨機海浪的模擬問題，給出了船舶橫搖模擬中需要的隨機海浪有效波傾角的模擬方法。分享友人