elastically supported 中文意思是什麼
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In the last, the modern control theory and simulink in matlab have been integrated together, and it has been applied in active control of the platform structure elastically supported ; a mechanical model and an equation of motion in state space have been established. based on coc, dynamic response of the platform structure elastically supported has been studied under simple harmonic load ; the influence of different values of weight function to the active control efficiency of the structure has also been discussed
本文還將現代控制理論與matlab的simulink動態模擬軟體包相結合，將其應用於彈性支承平臺結構的主動控制中；建立了彈性支承平臺結構主動控制理論的力學模型和狀態空間內的運動方程；應用經典線性最優控制演算法對彈性支承平臺結構在簡諧荷載作用下的動力響應進行閉環控制；分別從理論和數值計算兩個方面討論了狀態權函數矩陣q和控制權函數矩陣r的不同取值對控制效果的影響。 -
Generally, the skew bridge ' s calculation theories can be divided into three types : the category 1 is the plank theories method, such as the finite difference method, the finite element method and the finite strip method, etc ; the category 2 is the beam theories, such as the grid beam theories, the general grid theories, the rigid cross - beam method, the elastically - supported continuous beam method and the bar system analytical method, etc ; the category 3 is the practical method, such as the g - m revising method, the grid - beam simple method and ghali form coefficient method, etc
目前關于斜梁橋的計算理論和方法概括起來，大致可以分為三類：第一類為板理論方法，如有限差分法、變分法、有限單元法、有限條法等；第二類為梁理論法，如格構梁理論、一般格構理論、剛性橫梁法、彈性支承連續法、桿件結構的分析方法；第三類為實用計演算法，荷載橫向分佈的計算方法如g ? m修正法、格構梁的簡易法、 ghali表格系數法等。 -
All of the researches are carried out on the background of a spatial continuous beam - arch composite bridges, and the relative loading experimental results are compared with the calculated values. it indicates that the theory of elastically supported continuous beam method load lateral distribution is a kind of simple convenience and safe practical engineering calculation method. 2 ) the suspender force and correlated modality is analyzed with the use of general calculation program ansys. during testing suspender force, the influence of the rigidity of suspender must be considered
在此基礎上，以一座實際的預應力混凝土連續梁拱組合體系橋梁為工程背景，採用一般的試驗研究方法對該橋進行了荷載試驗研究，並將有關的荷載試驗結果與理論計算值作了比較，結果表明：所提出的彈性支承連續梁法計算值，與空間有限元分析理論值及荷載試驗測試值基本吻合。 -
Elastically supported beam
彈性支承梁 -
Elastically supported continuous girder
彈性支座連續梁 -
Aiming at the above circumstance, an actual example about testing table for impedance of some academe has been studied by use of space dynamic finite element program in this thesis. this paper analysis the factors which influence the dynamic characteristics of the elastically supported platform structure
針對以上情況，本文以某研究院的阻抗測試平臺為背景，採用空間動力有限元分析程序，對影響彈性支承平臺結構振動特性的諸多因素進行系統的研究。 -
In this paper, the studied works are list as follows : 1 ) the theory of elastically supported continuous beam method is brought forward to transfer spatial continuous beam - arch composite bridges into plane structure. the plane finite element method is used to calculate inner forces and deflections of each beam and arch. at the same time, spatial finite element model is created for contrast
研究提出用彈性支承連續梁法荷載橫向分佈理論計算空間梁拱組合式橋梁的荷載橫向分佈，從而將空間問題轉化為平面計算問題，進而用平面桿系有限元理論分析求解梁拱拱片各桿件截面的內力和撓度，並用空間有限元理論和通用程序建立空間模型進行對比計算。
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