波浪荷載 的英文怎麼說
中文拼音 [bōlànghézǎi]
波浪荷載
英文
wave load-
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 introduces the calculation of the loads of different waves and the combination of sine wave and cosine wave. furthermore, stressing on discussing the corresponding problems of the fem of the whole structure and putting forward the basic principles of building a fleet. taking a fleet for example, the paper discusses the whole response of the fleet and the local response of it according to different load cases
本文介紹了船舶的波浪載荷計算及按動態載荷法進行載荷分量組合，而且研究了結構有限元模型的有關問題，給出了結構的模型化原則；本文以一條051艦為例，討論了不同的工況下整船艦艇結構應力的響應以及局部結構的響應。After solution of radiational and diffractional fluid field of asymmetrical sections by applying the multipole expansion method, wave loads on damaged ships are calculated by the linear strip theory under the non - upright floating condition, taking the effect on the heel angle and trimming angle caused by the damaged tank inundation below waterline into account
然後採用線性切片理論，計及水線以下破損后船舶由於艙室進水產生的橫傾角與縱傾角的影響，利用多級展開法求解非對稱剖面的二維輻射和繞射流場，計算了破損船體非正浮狀態條件下的波浪載荷。Solution of nonlinear wave loads in regular oblique seas. based on strip method, thinking about nonlinear factors such as no straight shipboard on waterline, the instantaneous variation of wet surface shape and slamming effect of ship bottom, the numerical methods of nonlinear fluid force in large amplitude oblique regular seas are discussed
關于斜浪規則波中非線性波浪載荷的計算:本文基於切片理論，考慮到船體非直舷、水下剖面形狀的瞬時變化以及砰擊等非線性因素，討論了大波幅斜浪規則波中非線性流體力的時域計算方法。Specification of wave load measurement for model of naval surface ship
水面艦船模波浪載荷測試規程Review on stability analysis of deeply embedded large - diameter cylinder structure under wave load
在波浪荷載作用下插入式大圓筒結構穩定性分析評述The disruptive phenomenon is related to the change of sediment strength under the wave loading tightly
這一破壞過程與沉積物強度在波浪荷載作用下的變化是密切相關的。So for, because of the restriction of experiment boundary condition that different original condition and over ideal theorization model that is mentioned in the preface, it is imminence needs to understand the changing of reality soil on the true wave loading in true time and space so that validated and lead next research in theory and simulation
正如在前言中對此方面研究評述所提及，目前的研究被與實際迥異的實驗邊界條件和過分理想化理論模型制約，迫切需要了解真實的時間和空間尺度下，真實的土體在真實的波浪荷載作用下將發生怎樣的變化，以驗證和引導我們進行的理論與模擬研究。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 kind of instability bulk movement is induced by wave cyclic loading, as a result the slope of bottom bed decrease, water depth increase, and instability bulk movement has the character of subregion, regularity and head erosion, thus it will influence evolvement of region of interest landform, and change flow field and bottom stratum condition continually, so will lead to dynamic influence on structure foundation soil
這種不穩定塊體運動由波浪循環荷載誘發，其結果使底床整體坡度減緩，水深加大，而且不穩定的塊體運動具有小區域、多發性和溯源侵蝕的特點，將繼續影響著海域以後的水深地形的發展演化，並不斷改變著該區的流場與底床地層條件，對構築物地基土的穩定性產生著動態的影響。The steady solution of nonlinear ship motions in oblique seas can be gained by adopting the new technique presented in this thesis. this work promotes the application of theoretical prediction methods of nonlinear ship motions and wave loads
本文提出的新方法可以保證獲得斜浪中船舶非線性運動的穩定的周期解，從而進一步完善了斜浪中船舶非線性運動預報和波浪載荷計算的工程實用方法。Based on the commonly used strip theory with the extension of taking into account the instantaneous variation of the wetted hull surface during the motion and its effects on the ship hydrodynamic characteristics, this dissertation mainly calculates the ship motions and loads in waves in time domain and elementarily investigates some nonlinear characteristic of ship motion and hydrodynamic coefficient. it is hoped that the research had an engineering value for the predication and evaluation of seakeeping performance in the concept ship design stage
本文基於擴展的切片理論，計入船體運動時濕表面的變化及其對船體流體動力性能的影響，在時域內計算了船舶在波浪中的運動和載荷，並對船舶水動力系數及運動中的一些非線性因素進行了初步的探討，本文的研究對船舶設計階段的耐波性能評估具有工程實用價值。Under confused sea condition, the structures may subject to very strong w ave impulsive 1oad due to slamming by the wave with significant crest when waves propagate underneath the structure and surge up to its subface. previous studies indicate that impact pressures are characterized by an initial peak pressure of considerable magnitude but of short duration occurs, followed by a slowly - varying uplift pressure of less magnitude but of considerable duration, and which typically is first positive, then decreases to zero and becomes negative, in hostile sea state, the peak pressures may cause the damage of the horizontal members of the structures or make the whole superstructure collapsed
若這些海上建築物的上部結構底高程較低，在惡劣海況下當大波浪在其面板下面通過並與之接觸時，面板下面除了作用有強度變化較緩慢的波壓力外，在波峰剛接觸到面板時尚存在著歷時很短但強度極大的沖擊壓力，這種極強沖擊荷載會引起建築物的整個上部結構失穩或造成局部破壞。Then comparative study of bending moments and shearing forces is performed with the results calculated by traditional design loads method for the same assumption and the changes of wave loads are discussed in this paper
在一定假定條件下，將切片法計算的波浪彎矩與剪力同靜置法計算結果進行了比較，分析了破損后的載荷變化，為船體總縱剩餘強度研究提供依據。Prediction of the motions and wave loads acting on ships sailing on the sea is very important to the fem, the probability analysis and the fatigue analysis of ship structures
船舶在波浪中的運動響應及波浪載荷預報，對于船體結構有限元分析、可靠性分析及疲勞分析等是十分重要的。This paper will present an improved method which can take account of the transverse inclination and predict the motions and wave loads of a ship in heel
本文嘗試對原有的切片法進行擴展，使之能夠考慮到船體橫傾影響，進而重新建立運動方程，求解處于橫傾狀態的船舶在波浪中的運動響應及剖面波浪載荷。The realization of this scheme not only can improve the working and living condition on the platform but also can prolong its operational life span. this is bond to bring huge economic profit to offshore engineering, so it has a promising future. to validate the effectiveness of this vibration control method experimentally, a real control system is made to control the vibration of an oil platform model under simulated wave loadings and the experiment will be conducted in the next term
根據理論分析結果，本文後面又針對一個近海平臺的實驗模型給出了該模型在模擬波浪載荷作用下的振動控制系統設計方案，並進行了系統設計，用於將來的實驗模型振動控制實驗，以驗證文中所設計變剛度調諧質量阻尼器對由波浪載荷引起的平臺振動的控制效果。But due to the complexity of factors influencing fatigue performance, such as wave load and pressure from cargo, the combination of different stress components, stress concentration of local structure details, mean stress and the corrosive environments, etc, there are different specifications with varying classification societies, so it will lead to the diversity of results from different fatigue assessment methods
但是，由於影響結構疲勞性能的因素十分復雜，如波浪載荷和局部的貨物壓力，各種應力成分的組合，結構的局部細節應力集中，平均應力的影響，結構分身所處的腐蝕環境等等，所以各個船級社有關的規定也不一樣，這樣必然造成各個評估方法之間的差異。Finally, the spectral fatigue analysis has been conducted under linear wave load and ship motion
4 、按照譜分析方法，對線性波浪載荷下結構的疲勞壽命進行了計算。The water - exit movement of the submarine - based powerless missile which is horizontally or vertically launched is solved. the change trend of force and moment which are put on the missile is given. the effects of ocean current and wave that affect the missile is studied based on the front work
本文建立了導彈出水運動數學模型，採用定步長四階龍格-庫塔（ runge - kutta ）法求解了潛載無動力導彈水平發射和垂直發射的出水運動過程；給出了導彈出水過程中所受力和力矩載荷的變化情況，並在此基礎上分別研究了海流和波浪對導彈的影響。分享友人