振浪 的英文怎麼說
中文拼音 [zhènlàng]
振浪
英文
counter soings-
Wave upon wave, antlers vibrating, tails ablaze
波浪滾滾,鹿角振動,尾巴上燃著烈火。Analysis of the vibration and extreme strength of very large pontoon under extreme wave loads
極值波浪作用下大型浮碼頭振動與極限強度分析At present, surge control method for centrifugal compressor being used is commonly by least - flow method. it can ’ t make compressor working within operating condition area, sometimes starts the surge control system earlier, which will waste energy sources and depress economy benefit. even, its control system commonly consists of simulation instrument, can ’ t modify the changing surge curve of compressor in time and can ’ t control nonlinear surge curve preferably
目前,在用的離心壓縮機的防喘振方法一般採用最小流量法,它不能充分使壓縮機工作在其工況區,往往過早起動防喘振系統,浪費了能源,降低了經濟效益。且控制系統一般採用模擬儀表構成,在壓縮機的喘振線發生變化時不能及時修正,對非線性的喘振線不能較好的實施控制。From this thesis, it can be stated that the use of observation implement and active cable can produce timely active control to ship in the wave. because active cable can enhance ship ' s ability of anti - siamming but do n ' t affect ship ' s inward capability, it should be given some attention in the application research of active control method in ship structure vibration by slamming
從本文中可以看出,將觀測器和作動器相結合可以對航行於波浪中的船舶結構振動實施適時的主動控制,並且裝上作動器不但不會影響船體本來的性能,而且可以增加其抗波浪砰擊能力,因此主動控制方法在船舶結構砰擊響應控制方面的應用和研究應該給予一定的重視。There is nearly no research on using active control method to reduce ship structural vibration stirred by slamming. this thesis studied theoretically on active cable and active tuned mass damper which were designed on the base of lqr theory. then the thesis studied concretely on the validity of active cable by an example
本論文對船舶結構波浪砰擊響應的主動控制方法進行了研究,主要對基於線性二次型最優控制原理設計出來的主動纜作動器和主動式調諧阻尼器兩種控制器做了理論原理和作動器構成上的探討,並進一步研究了主動纜作動器運用於船舶因波浪砰擊引起的結構振動控制的有效性。Based on using the performance forecast model of centrifugal compressor, this paper the analyze is carried out on the performance forecast for centrifugal compressor and surge model of centrifugal compressor is established on its system. surge line of this system is obtained according to the performance similar principle. performance forecast software is compiled by using matlab at the same time
本文在離心壓縮機性能預測模型的理論基礎上,對離心壓縮機進行性能預測分析,並建立系統的喘振模型,然後利用性能相似原理,得到離心壓縮機系統喘振線,同時利用matlab編制離心壓縮機性能預測軟體,應用於防喘振控制中,較好地解決了離心壓縮機因喘振現象而停機或為防止喘振現象的發生而過分加大迴流量,造成能源浪費的問題。We turned the volume up, too, embarrassing office surfers who scrambled for the “ mute ” button and deafening everyone wearing headphones
我們也把體積調大,為"啞子"鈕扣攀緣的令人困窘的辦公室乘沖浪板玩樂的人和振耳欲聾的每個人穿用的耳機。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。The variation of wave - induced nearshore current fields and long period oscillation of water surface result in sediment transport, resonance of harbors, ship failures, diffusion of pollutants and difficult sea rescues, drawing scientific researchers " concern
由波浪產生的近岸流場的變化和水面的長周期振蕩,導致泥沙遷移,港口共振,船舶失事,污染擴散,海上救生困難,這些都已經引起了科研工作者的廣泛重視。The primary incident wave period has a minor effect on the long period oscillations in hwa - lien harbor, and the incident wave energy merely acts as an amplifier affecting the magnitude of the oscillations
顯示其發生機制中,波浪的主頻相關性不大,而波浪能量可能僅是增幅的作用;並非臺風波浪作用才會發生長周期振蕩。The anti - rolling tanks have three types including passive anti - rolling, controlled passively anti - rolling tank and active anti - rolling tank. the controlled passively anti - rolling tank has high performance, and it can adjust the water oscillation period through the valves in the upper of side tank in order to adapt the roll period. thus the controlled passively anti - rolling has favorable effect in the any states
其中,可控被動式減搖水艙是一種高效能的減搖水艙,它可以通過自動控制系統調節邊艙頂部的氣閥開關來調節水艙內水流振蕩周期,以適應經常變化的橫搖周期,保證在任何海浪作用下水艙都具有良好的減搖效果。( 3 ) reliability analysis of vibration discomfort of wind - excited buildings was carried out, which presented a reliability - base design formulation that accounted for the uncertainties existed in the dynamic parameters, human response and design methods. ( 4 ) the serviceability - based optimization of tall building was also carried in the chapter and optimization methods and strategies were proposed. the application of ar model in fixed offshore platform was discussed in chapter 6 and chapter 7, which included problems of vibrations induced by sea wave and vibrations induced by sea ice
論文第六章、第七章研究了煩惱率方法在海洋平臺結構設計中的應用,本章研究表明: ( 1 )合理選擇波浪譜是進行波浪作用下平臺結構振動舒適度分析的前提; ( 2 )平臺結構振動舒適度的設計水準應該考慮到結構的不同設計壽命; ( 3 )平臺冰激振動舒適度的設計水準應該和海冰區劃相結合。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。These means have following defects : i. parameter controls is too simple that will fit the curve too roughly and can ’ t give the configuration and characteristic of surge curve very good ; ii. the performance curve will change a lot when working condition changes, especially when woring temperature changes ; iii. choking area will bring huge waste and is an area that the system oughts to avoid, but we haven ’ t corresponding methods to watch and control it in the domestic till now
這些措施具有以下缺點: 1 、控制參數過于簡單,對曲線的擬合過于粗糙,不能很好的反映喘振曲線的形態和特點; 2 、當工作條件變化時,特別是工作溫度有所變化時,性能曲線會發生很大變化; 3 、阻塞區會造成巨大的浪費,也是系統該避免的區域,可是目前國內還沒有相應措施來監控它。The physical experiments give the series of wave records under the interaction between surface waves and sandbars on the seabed. based on the series of wave records, reflection coefficients are calculat ed by goda ' s method and the bragg resonance are obtained
對物理模型試驗得到的波浪與正弦沙壩地形相互作用的波面序列,用goda的兩點法計算出反射系數,較好地反映出了bragg共振現象。An offshore platform is subjected to the action of environment loads such as the wind, wave, flow and ice etc. these loads are long - term and consecutive, so an offshore platform exist more serious vibration during its serving life than other buildings in land
海洋平臺受風、浪、流和冰等環境荷載的作用,這些外荷載具有顯著的長期性、連續性特點,因此,海洋平臺在使用過程中存在著較陸上結構更為明顯、持續的振動問題。There are now 19 manufacturers that have been authorized to make cdma handsets. they are bird, kejian, zte, tcl, haier, konka, datang, zhenhua, hisense, nanjing ptic, amoisonic, motorola ( china ), capitel, etc. according to a plan of unicom, it will serve 40, 000, 000 cdma subscribers in five years
國家計委決定, 19家企業獲得了生產cdma手機的資格,它們是:波導、科健、中興、首信、 tcl 、海爾、東方通信、康佳、南方高科、中電通信、大唐、貴州振華、浪潮、海信、大連大顯、南京普天、天津電話設備廠、廈華以及摩托羅拉中國公司。Abstract : on the basis of the space structure model, the behavio r of natural oscillation of open pile - supported beam - slab wharf and its dynamic response to wave forces were calculated and analyzed. it is pointed out that dyna mic analysis should be made when an open pile - supported wharf is designed
文摘:本文在空間結構模型的基礎上,對開敞式樁基梁板碼頭結構的自振特性及其在波浪力作用下的動力響應進行了計算分析,指出開敞式樁基碼頭設計應進行動力分析。Considering the difference of time that the wave crest reaches the adjacent platforms, the adjacent offshore platform vibration control with viscoelastic dampers is studied as well. the results show it is effective to control the vibration of offshore platform with viscoelastic dampers
考慮波浪峰值先後到達相鄰平臺的時間不同,研究了採用粘彈性阻尼器的相鄰海洋平臺的振動控制;分析了利用粘彈性阻尼器對海洋平臺進行振動控制的有效性。Abstract : in this paper, dynamic loads caused by driving on und ulate pavement are analyzed and a theoretical relation between dynamic loads of automobile and undulate pavement is developed. at given automobile mechanism para meter 、 moving velocity and undulate pavement parameter dynamic loads of automobi le are analyzed through an example
文摘:筆者理論分析了汽車行駛在波浪形路面上時汽車對路面的動荷載作用,推導了汽車動荷載與路面波形的理論計算公式,實例計算了在給定汽車結構參數、行駛速度、波形路面的波長、振幅時的汽車動荷載分享友人