random waves造句
例句與造句
- this thesis is combined with the project " identification of nonlinear structural dynamic systems and the study on structural vibration control for offshore platforms ", which is supported by national science foundation of china . based on the present situation on the vibration control for offshore platforms, this thesis studies the dynamic properties of offshore platforms under random wave loading, furthermore, proposes feedforward-feedback control strategy and h2 control method to suppress the vibration of platforms
在充分了解國(guó)內(nèi)外有關(guān)結(jié)構(gòu)振動(dòng)控制理論研究現(xiàn)狀的基礎(chǔ)上，本文考慮了海洋平臺(tái)在隨機(jī)波浪作用下所表現(xiàn)的動(dòng)力特性，及振動(dòng)控制技術(shù)在應(yīng)用于海洋平臺(tái)過程中的一些理論和技術(shù)問題，對(duì)海洋平臺(tái)振動(dòng)控制技術(shù)和一些相關(guān)問題進(jìn)行了較為深入的研究。 - with the disturbance of random wave the ship will inevitably roll and result in the ship's incline, especially, for small ships which the most obliquity of the ship is likely to reach above degree 15 . in the actual combat the rolling movement of the ship will result in difficult control of the artillery for the artillerymen on the ship, reduce the artillery's probability of shots, and affect the power of the artillery by direct control of the object ( artillery ) fixed on the ship it can be kept horizontal state all the time
尤其是對(duì)大量的小型艦船，船體的最大傾角甚至可達(dá)到15以上。在實(shí)戰(zhàn)中，船舶的搖蕩將造成炮手對(duì)船載火炮的操縱性能降低，降低火炮的發(fā)射命中率，影響到船載火炮威力的發(fā)揮。通過直接控制固連于船體的火炮，使其始終保持在水平狀態(tài)，可以提高實(shí)戰(zhàn)中火炮的操縱性能，提高火炮的命中率。 - 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(duì)某一典型平臺(tái)結(jié)構(gòu)，建立了海洋平臺(tái)結(jié)構(gòu)阻尼隔振體系簡(jiǎn)化計(jì)算模型，進(jìn)行了波浪荷載工況和地震工況的數(shù)值模擬，研究了隔振參數(shù)與結(jié)構(gòu)阻尼比的關(guān)系以及它們對(duì)結(jié)構(gòu)整體和隔振層層間相對(duì)位移的控制效果，運(yùn)用復(fù)模態(tài)理論研究了位于較深水位的固定式導(dǎo)管架海洋平臺(tái)在隨機(jī)波浪力作用下考慮結(jié)構(gòu)與波浪相互作用時(shí)運(yùn)動(dòng)方程中非經(jīng)典阻尼的解耦問題，獲得了結(jié)構(gòu)響應(yīng)的解析解。 - 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(duì)某一典型平臺(tái)結(jié)構(gòu)，建立了海洋平臺(tái)結(jié)構(gòu)阻尼隔振體系簡(jiǎn)化計(jì)算模型，進(jìn)行了波浪荷載工況和地震工況的數(shù)值模擬，研究了隔振參數(shù)與結(jié)構(gòu)阻尼比的關(guān)系以及它們對(duì)結(jié)構(gòu)整體和隔振層層間相對(duì)位移的控制效果，運(yùn)用復(fù)模態(tài)理論研究了位于較深水位的固定式導(dǎo)管架海洋平臺(tái)在隨機(jī)波浪力作用下考慮結(jié)構(gòu)與波浪相互作用時(shí)運(yùn)動(dòng)方程中非經(jīng)典阻尼的解耦問題，獲得了結(jié)構(gòu)響應(yīng)的解析解。 - statistics of wave crests with different directional spreading parameters and different directional functions are obtained and discussed . jonswap spectrum and the directional function suggested by mitsuyasu, donelan and wen respectively are employed in the analyses . statistical distribution of wave crest characteristics such as crest length, crest height, and directional angles based on the above-mensioned numerical simulation of 3-d random waves are analyzed
以jonswap譜為頻譜，選取光易型方向函數(shù)(含三個(gè)參數(shù))、donelan方向函數(shù)以及文氏方向函數(shù)等不同的方向函數(shù)進(jìn)行模擬，對(duì)得到的波峰形式進(jìn)行比較，分析了方向函數(shù)對(duì)波峰長(zhǎng)度統(tǒng)計(jì)值的影響。 - It's difficult to find random waves in a sentence. 用random waves造句挺難的
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